WO2018120240A1

WO2018120240A1 - Apparatus and method for adjusting electromagnetic wave radiation parameter, and storage medium

Info

Publication number: WO2018120240A1
Application number: PCT/CN2016/113989
Authority: WO
Inventors: 黄海; 杨江涛
Original assignee: 华为技术有限公司
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-05

Abstract

A mobile terminal, comprising: a processor, a memory, and an antenna. The processor is used for executing an instruction stored in the memory, sending a first waveform signal to the antenna, and receiving a second waveform signal, the second waveform signaling being generated from the first waveform signal by means of antenna reflection; and the processor adjusts the intensity and/or radiation direction of electromagnetic waves of the mobile terminal according to the second waveform signal. According to embodiments of the present invention, the radiation intensity and/or radiation direction of electromagnetic waves of a mobile terminal can be adjusted based on a second waveform signal which is able to reflect the distance between an object and the mobile terminal, and thus the design costs are reduced.

Description

Device, method and storage medium for adjusting electromagnetic wave radiation parameters

Technical field

Embodiments of the present invention relate to the field of mobile communications technologies, and in particular, to an apparatus, method, and storage medium for adjusting electromagnetic wave radiation parameters.

Background technique

With the rapid development of wireless communication technologies, mobile terminals have been widely used and applied. However, due to the daily application scenarios, the influence of electromagnetic waves radiated by mobile terminals on human health has attracted more and more attention.

Generally, the electromagnetic absorption rate (SAR) indicator is used internationally to measure the energy absorbed by the human body in an electromagnetic wave exposure environment. Due to the widespread popularity of mobile terminals (such as mobile phones, tablets, etc.) in the world, in recent years, more and more national government departments, telecommunications regulatory agencies and other requirements to reduce SAR to an appropriate level. Many countries have enacted regulations to ensure the safety of electromagnetic radiation to the human body by limiting the upper limit of the SAR of mobile terminals. The maximum allowable absorption ratio of various antenna mobile terminals when interacting with the human body is clearly defined.

The common practice in the industry is to add a sensor pad and a capacitance detecting chip in the mobile terminal. When a human body approaches the sensor pad, the sensor pad and the human body form a capacitance, and the capacitance formed by the sensor pad and the human body is detected by a dedicated capacitance detecting chip, according to the detected The capacitance determines the distance of the human body from the sensor pad. When the distance satisfies the preset condition, the electromagnetic wave radiation amount of the mobile terminal is adjusted to reduce the SAR.

However, with the above solution, although the amount of electromagnetic wave radiation of the mobile terminal is adjusted, it is necessary to additionally increase the sensor pad and the capacitance detecting chip, which not only requires a larger position space, but also leads to higher design cost, and cannot satisfy the small size of the mobile terminal. The need for thinning and thinning.

Summary of the invention

The embodiment of the invention provides a scheme for adjusting parameters of electromagnetic wave radiation, which simplifies the design scheme and reduces the design cost.

In a first aspect, a mobile terminal is provided, the mobile terminal comprising: a processor, a memory, an antenna; the memory is configured to store computer executable program code, the program code includes instructions; and the processor is configured to execute the The instruction is: transmitting a first waveform signal to the antenna; receiving a second waveform signal, wherein the second waveform signal is formed by the first waveform signal being reflected by the antenna; and adjusting the location according to the second waveform signal The electromagnetic radiation intensity and/or radiation direction of the mobile terminal. By using the processor, the memory and the antenna component of the mobile terminal, the electromagnetic radiation intensity and/or the radiation direction of the mobile terminal can be adjusted without additional detection components, which simplifies the implementation scheme and reduces the design cost.

In a possible design, the processor adjusts an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to the second waveform signal, and includes: the processor determines, according to the second waveform signal, For a time, the first time is a rising edge time of the second waveform signal; according to the first time, adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal; and/or the processor is configured according to The second waveform signal determines a first capacitance, the first capacitance is a capacitance of the antenna relative to the ground; and according to the first capacitance, adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal; and/ Or the processor determines a distance between the human body and the antenna according to the second waveform signal; and adjusts an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to a distance between the human body and the antenna. That is, when the rising edge time of the second waveform signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than the preset distance, the processor The electromagnetic radiation intensity of the mobile terminal can be reduced and/or the radiation direction can be adjusted away from the human body to reduce the influence of the electromagnetic wave radiation of the mobile terminal on the human body; the reduced electromagnetic wave radiation intensity and/or the adjusted radiation direction are maintained until the second party The rising edge time of the wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than the preset distance, the processor may increase the mobile terminal The intensity of the electromagnetic radiation and/or the direction of the radiation is adjusted to improve the radio frequency performance of the mobile terminal. The rising edge time of the second square wave signal and the capacitance of the antenna relative to the Emperor can reflect the distance between the antenna and the human body. This design method adaptively adjusts the electromagnetic wave radiation of the mobile terminal according to the distance between the antenna and the human body. The amount, while taking into account when the human body is close to the antenna, reducing the impact of electromagnetic radiation on the human body, and When the human body is away from the antenna, the radio frequency performance of the mobile terminal is improved.

In one possible design, the first waveform signal is a rectangular wave, a sawtooth wave, a square wave, a triangular wave, or a sine wave signal.

In a possible design, the processor adjusts an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal, including: the processor switches an operating state of the antenna, wherein: when the antenna is in an operating state When changing, the electromagnetic radiation intensity and/or radiation direction of the mobile terminal is different. By switching the working state of the antenna, it is possible to adjust the electromagnetic radiation intensity and/or the radiation direction of the mobile terminal.

In a possible design, the antenna includes a first antenna and a second antenna; and the processor switches an operating state of the antenna, including: the processor switches the antenna by the first antenna radiation Radiation for the second antenna; the electromagnetic radiation intensity of the second antenna is different from the electromagnetic radiation intensity of the first antenna; and/or the electromagnetic radiation direction of the second antenna and the electromagnetic radiation of the first antenna The direction is different. By arranging two antennas, when the human body is close to the antenna, an antenna having a small radiation to the human body and the hearing aid device is selected to reduce the influence of the electromagnetic radiation on the human body; when the human body is away from the antenna, the antenna with better radio frequency performance is selected. Improve the radio performance of mobile terminals.

In a possible design, the mobile terminal further includes an antenna matching circuit; the antenna matching circuit is connected to the antenna; the antenna matching circuit includes a first matching circuit and a second matching circuit; The working state of the antenna includes: the processor switches the antenna matching circuit from the first matching circuit to the second matching circuit; and the electromagnetic wave radiation intensity when the antenna is connected to the second matching circuit And the electromagnetic wave radiation intensity when the first matching circuit is connected to the antenna is different; and/or the electromagnetic wave radiation direction when the antenna is connected to the second matching circuit, when the antenna is connected to the first matching circuit The electromagnetic wave radiation direction is different. By arranging two sets of antenna matching circuits, when the human body is close to the antenna, an antenna matching circuit that has a small radiation to the human body and the hearing aid device after being connected to the antenna is selected to reduce the influence of the electromagnetic wave radiation on the human body; when the human body is away from the antenna, the selection is made. An antenna matching circuit with good RF performance after being connected to the antenna to improve the radio frequency performance of the mobile terminal.

In a possible design, the antenna includes a main antenna, a switching device, and a reserved trace; the switching device is configured to control the main antenna to be connected or disconnected from the reserved trace; the processor Switching the working state of the antenna includes: the processor switching an operating state of the switching device, connecting the main antenna to the reserved trace to form a new antenna; and electromagnetic wave radiation intensity of the new antenna The electromagnetic radiation intensity of the main antenna is different; and/or the electromagnetic wave radiation direction of the new antenna is different from the electromagnetic wave radiation direction of the main antenna. Switching between the main antenna or the new antenna through the switching device, when the human body is close to the antenna, the antenna having less radiation to the human body and the hearing aid device is selected to reduce the influence of the electromagnetic radiation on the human body; when the human body is away from the antenna, the radio frequency performance is better. Antenna to improve the RF performance of mobile terminals.

In a possible design, the mobile terminal further includes a power amplifier; the processor adjusting an electromagnetic radiation intensity of the mobile terminal, the processor comprising: adjusting a control voltage and/or a power voltage of the power amplifier Wherein: the electromagnetic wave radiation intensity of the mobile terminal is different when the control voltage and/or the power supply voltage of the power amplifier changes; and/or the processor adjusts a gain of the power amplifier, wherein: when the power When the gain of the amplifier changes, the electromagnetic wave radiation intensity of the mobile terminal is different. Adjusting the control voltage and/or the power voltage of the power amplifier when the human body is close to the antenna, and/or increasing the gain of the power amplifier to reduce the influence of the electromagnetic radiation amount on the human body; adjusting the body when the human body is away from the antenna The control voltage and/or supply voltage of the power amplifier, and/or the gain of the power amplifier, to improve the radio frequency performance of the mobile terminal.

In a possible design, the processor adjusts the electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal, and includes: the processor reduces the mobile terminal according to the second waveform signal An electromagnetic wave radiation intensity; and/or the processor increases an electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal. According to the distance between the antenna and the human body, the adaptability reduces or increases the electromagnetic radiation intensity of the mobile terminal.

In a possible design, the mobile terminal further includes a sensor; the sensor includes a proximity sensor, an ambient light sensor, and/or an accelerometer sensor; the processor receives sensing data sent by the sensor; The processor determines, according to the sensing data, that the mobile terminal transmits a first waveform signal to the antenna when the mobile terminal approaches the human body. This increases the distance between the antenna and the human body. Adjusting the accuracy of the electromagnetic wave radiation intensity of the mobile terminal, and further, when determining that the mobile terminal is not close to the human body according to the sensing data, the first waveform signal may not be sent to the antenna, thereby saving power consumption of the mobile terminal.

In a possible design, the mobile terminal further includes a positioning module, where the positioning module is configured to determine a location where the mobile terminal is located; and an upper limit of the SAR specified by the mobile terminal according to a national or regional regulation of the current location. The value further determines the switching scheme of the antenna working state according to the upper limit value of the SAR, and/or the maximum transmitting power of the mobile phone. In this way, according to the regulations of the SAR of the country or region to which the mobile terminal is located, the electromagnetic radiation intensity and/or the radiation direction of the mobile terminal can be more specifically adjusted.

In a second aspect, a method for adjusting electromagnetic wave radiation parameters of a mobile terminal is provided, which is applied to a mobile terminal, the mobile terminal includes an antenna, and the method includes: the mobile terminal sends a first waveform signal to the antenna; a second waveform signal, wherein the first waveform signal is formed by the antenna reflection; and the electromagnetic wave radiation intensity and/or the radiation direction of the mobile terminal is adjusted according to the second waveform signal. Based on the same inventive concept, the implementation of the method and the beneficial effects of each possible mobile terminal according to the first aspect and the first aspect can be seen by the method and the beneficial effects of the method. The possible implementation manners of the mobile terminal of the first aspect and the first aspect are not repeated herein.

In a third aspect, an apparatus is provided, the apparatus comprising: a sending unit, a receiving unit, and a processing unit: the sending unit is configured to send a first waveform signal to an antenna; and the receiving unit is configured to receive a second waveform signal, The second waveform signal is formed by the first waveform signal being reflected by the antenna; and the processing unit is configured to adjust an electromagnetic wave radiation intensity and/or a radiation direction of the device according to the second waveform signal. Based on the same inventive concept, the implementation of the device and the beneficial effects of each of the possible mobile terminals of the first aspect and the first aspect can be seen from the above-mentioned first aspect and the first aspect of the present invention. The implementation of the first aspect and the possible mobile terminals of the first aspect will not be repeated here.

In a fourth aspect, a storage medium is provided, the storage medium being a non-transitory computer readable storage medium, the non-volatile computer readable storage medium storing at least one program, each of the The program includes instructions that, when executed by a mobile terminal having a processor, an antenna, cause the mobile terminal to perform the various possible method designs of the second and second aspects described above.

The solution provided by the embodiment of the invention simplifies the implementation scheme of adjusting the electromagnetic radiation intensity and/or the radiation direction according to the distance between the antenna and the human body, and reduces the design cost.

DRAWINGS

1 is a schematic diagram of a mobile terminal located near a human body;

2 is a block diagram showing a part of a structure of a mobile phone 100 according to an embodiment of the present invention;

3 is a schematic diagram of a capacitance of an antenna to ground relative to a distance between an antenna and a human body according to an embodiment of the present invention;

4 is a schematic diagram showing a variation of a rising edge time of a second waveform according to an antenna and a human body in an embodiment of the present invention;

FIG. 5 is a functional structural diagram of a mobile phone 100 according to an embodiment of the present invention;

6 is a graph of maximum transmit power and time of the mobile phone 100 according to an embodiment of the present invention;

7 is a flowchart of a method for adjusting electromagnetic radiation intensity and/or radiation direction of a mobile phone according to an embodiment of the present invention;

FIG. 8 is a structural diagram of a device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments.

In view of the current industry needs to detect the distance between the human body and the mobile terminal, the transmission power of the mobile terminal is adjusted according to the detected distance, and the current industry detection method for detecting the distance between the human body and the mobile terminal needs to add a dedicated detection chip to increase the design cost, and Increase the layout area of the PCB. The embodiment of the present invention sends a first waveform signal to an antenna through a mobile terminal, and receives a second waveform signal, the second wave. The shape signal is formed by the first waveform signal being reflected by the antenna; and the electromagnetic wave radiation parameter of the mobile terminal is adjusted according to the second waveform signal, specifically, adjusting the electromagnetic wave radiation intensity and/or the radiation direction of the mobile terminal. The second waveform signal can reflect the distance between the human body and the mobile terminal. When the second waveform signal reflects that the distance between the human body and the mobile terminal is less than the distance threshold, the electromagnetic wave radiation intensity of the mobile terminal is reduced according to the second waveform signal and/or the radiation direction is adjusted to reduce the influence of the electromagnetic wave radiation of the mobile terminal on the human body. Maintaining the adjusted electromagnetic wave radiation parameter until the second waveform signal reflects that the distance between the human body and the mobile terminal is greater than the distance threshold, increasing the electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal and/or adjusting the radiation direction to improve the mobile terminal RF performance. Therefore, the solution of the embodiment of the present invention can solve the problem of the prior art, that is, the electromagnetic wave radiation parameter of the mobile terminal can be adjusted without adding a dedicated detection chip, thereby reducing the SAR when the human body approaches the mobile terminal, and when the human body is away from the mobile terminal. Improve the radio performance of the mobile terminal.

SAR is the electromagnetic wave absorption ratio or specific absorption rate. It is the electromagnetic wave energy absorption ratio of mobile terminals or wireless products. Since various organs of the human body are conductive media, electromagnetic energy is absorbed and dissipated. SAR is the electromagnetic power absorbed by human tissue per unit mass, which can measure the influence of electromagnetic energy of mobile terminal products on the human body. The unit of SAR is W/Kg (Watt/kg). The larger the SAR, the greater the influence of the electromagnetic energy of the mobile terminal product on the human body; otherwise, the smaller the impact.

When the mobile terminal is close to the human body, for example, the mobile terminal illustrated in FIG. 1 is located on the right side of the user's head, on the left side of the head, in one hand, and in both hands, the electromagnetic energy generated by the mobile terminal is absorbed by the human head and the human hand.

The embodiments of the present invention are applicable to mobile terminals. In some embodiments, the mobile terminal may be a portable mobile terminal such as a mobile phone, or may be a mobile device such as a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a car computer, or the like. Communication device for communication functions. For convenience of description, the embodiment of the present invention uses a mobile phone as an example for exemplary description.

FIG. 2 is a block diagram showing a partial structure of a mobile phone 100 according to an embodiment of the present invention. Referring to FIG. 2, the mobile phone 100 can include a housing 105 (shown in FIG. 1), a display screen 140, a memory 120, a processor 180, an antenna 104, a radio frequency circuit 110, a positioning module 195, a sensor 150, and other input devices 130, I. /O subsystem 170, audio circuit 160, power supply 190, and the like. Those skilled in the art will understand that The structure of the handset shown in Figure 2 does not constitute a limitation to the handset, it may include more or fewer components than illustrated, or some components may be combined, or some components may be split, or different components may be arranged.

The handset 100 can have a housing 105. An antenna for processing wireless communication can be housed within the housing 105. Housing 105, which may also be referred to as a housing, may be formed from any suitable material. These include plastic, glass, ceramic, metal, or other suitable materials, or a combination of these materials. In some embodiments, portions of the housing 105 or housing 105 may be formed of a dielectric or other low conductivity material; thereby not interfering with the operation of the conductive antenna elements located adjacent the housing 105. The housing 105 or portions of the housing 105 may also be formed from a conductive material, such as a metal. Where the housing 105 is formed from a metal component, one or more metal components can be used as part of the antenna in the handset 100.

The display screen 140 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone 100, and can also accept user input. The specific display screen 140 may include a display panel 141 and a touch panel 142. The display panel 141 can be configured by using an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. The touch panel 142, also referred to as a touch screen, a touch sensitive screen, etc., can collect contact or non-contact operations on or near the user (such as the user using any suitable object such as a finger, a stylus, or the like on or near the touch panel 142). Or the operation in the vicinity of the touch panel 142 may also include a somatosensory operation; the operation includes a single-point control operation, a multi-point control operation, and the like, and drives the corresponding connection device according to a preset program. Optionally, the touch panel 142 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation and posture of the user, and detects a signal brought by the touch operation, and transmits a signal to the touch controller; the touch controller receives the touch information from the touch detection device, and converts the signal into a processor. The processed information is sent to the processor 180 and can receive commands from the processor 180 and execute them. In addition, the touch panel 142 can be implemented by using various types such as resistive, capacitive, infrared, and surface acoustic waves, and the touch panel 142 can be implemented by any technology developed in the future. Further, the touch panel 142 can cover the display panel 141, and the user can display the content according to the display panel 141 (the display content includes, but is not limited to, a soft keyboard, a virtual mouse, a virtual button, an icon, etc.) on the display panel 141. Operation is performed on or near the covered touch panel 142. After detecting the operation thereon or nearby, the touch panel 142 transmits to the processor 180 through the I/O subsystem 170 to determine user input, and then the processor 180 according to the user The input provides a corresponding visual output on display panel 141 via I/O subsystem 170. Although the touch panel 142 and the display panel 141 are used as two separate components to implement the input and input functions of the mobile phone 100 in FIG. 1, in some embodiments, the touch panel 142 may be integrated with the display panel 141. The input and output functions of the mobile phone 100 are implemented.

The handset 100 can also include a memory 120 for storing computer executable program code, the program code including instructions. The processor 180 executes various functional applications and data processing of the mobile phone 100 by executing instructions stored in the memory 120. The memory 120 may mainly include a storage program area and a storage data area. The storage program area can store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.). The storage data area can store data (such as audio data, phone book, etc.) created according to the use of the mobile phone 100. Moreover, memory 120 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The handset 100 can also include a processor 180. The processor 180 is a control center of the mobile phone 100. Connect the various parts of the entire phone with a variety of interfaces and lines. The various functions and processing data of the handset 100 are performed by running or executing software programs and/or modules stored in the memory 120, as well as recalling data stored in the memory 120, thereby providing overall monitoring of the handset. Alternatively, processor 180 may include one or more processing units. The processor 180 can integrate an application processor, a modem processor, a baseband module, a power management chip, a memory, a codec, and the like. Among them, the application processor mainly deals with operating systems, user interfaces, applications, and the like. The modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 180. The Internet Protocol, Wireless Local Area Network Protocol (e.g., IEEE 702.11), 3G, 4G, 5G communication protocols, etc., can be implemented using the processor 180 and the memory 120.

The handset 100 can also include an antenna 104 for transmitting and receiving radio frequency signals. The antenna 104 can be located anywhere in the handset 100. The position of the antenna illustrated in the embodiment of the present invention is merely exemplary. Bright. Cell phone 100 can have one or more antennas. Each antenna in handset 100 can be used to cover a single or multiple communication bands.

The handset 100 also includes a radio frequency circuit 110. Used to receive and send signals during sending or receiving information or during a call. For example, after receiving the downlink information of the base station, it is sent to the processor 180 for processing. In addition, the uplink data is transmitted to the base station. Generally, the radio frequency circuit 110 includes at least one power amplifier 109, a transceiver 108, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like. In addition, the radio frequency circuit 110 can also communicate with the network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access). , Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), e-mail, SMS (Short Messaging Service), and the like.

The handset 100 can also include a power amplifier 109 for amplifying the radio frequency signals to be transmitted by the handset 100. Power amplifier 109 can be implemented using one or more gain stages in one or more integrated circuits, as shown in FIG. It will be appreciated that there may be a plurality of power amplifiers 109, each associated with a communication band or a group of communication bands. To simplify the description, FIG. 2 is schematically illustrated by a single power amplifier 109 symbol.

Optionally, the mobile phone 100 may further include a positioning module 195. The positioning module is configured to detect the position, orientation, and the like of the mobile phone 100. Detection of the location or orientation of the handset 100 can be performed using various positioning services, such as Global Positioning System (GPS), Assisted GPS (A-GPS), cellular based on registered cellular telephones. Telephone base station triangulation or trilateration, Galileo positioning system, or other positioning or location services or technologies. Various hardware, software, and combinations thereof can be used to detect the location or orientation of the handset 100, such as GPS units, accelerometers, and other orientation and motion detection services or technologies in the handset 100.

The handset 100 can also include a sensor 150, which can include a proximity sensor, an ambient light sensor, an accelerometer sensor, and the like. Wherein, the ambient light sensor can adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor can close the display panel 141 and/or the backlight when the mobile phone 100 moves to the ear.

Proximity sensors can include, for example, light emitting diodes (LEDs) and associated photodetectors, such as photodiodes. The light emitting diode may be an infrared light emitting diode, and the infrared light 11 is emitted outward through the light emitting diode (as shown in FIG. 5). Photodiodes are used to detect infrared reflected light 12 from nearby objects (see Figure 5). When sufficient reflected light is detected, it can be determined that there is an object in the vicinity of the mobile phone 100. When insufficient reflected light is detected, it can be determined that there is no object near the mobile phone 100.

The ambient light sensor can be a photodiode or other light sensor capable of detecting incoming light 13 (as in Figure 5). Ambient light sensors can operate in the visible and/or infrared spectrum. When the ambient light sensor is not obscured by the object, the ambient light sensor will typically receive more light 13 than when the ambient light sensor is blocked by the object, so ambient light sensors can be used to generate proximity data. This data can be used alone or in combination with proximity data from other sensors so that the handset 100 can more accurately determine if there are objects near the handset.

Accelerometer sensors detect the magnitude of acceleration in all directions (typically three axes). The magnitude and direction of gravity can be detected when the handset 100 is stationary. The accelerometer sensor can be used to identify the gesture of the phone (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap). An accelerometer can be used to determine if the handset 100 is in motion (possibly held by the user), or if the handset 100 is being held by the user such that its left or right edge is facing down, or if the handset 100 is being placed horizontally on the desktop. If it is determined that the handset 100 is horizontal and stationary, it can be determined that the handset 100 is less likely to be held. This data can be combined with data from proximity sensors and other data to assist in determining whether the readings obtained from other sensors in the handset 100 are accurate.

The mobile phone 100 can process signals from a plurality of sensor devices (eg, proximity sensors, ambient light sensors, etc.) in parallel, determine whether there is an object in the vicinity of the mobile phone 100, and improve the accuracy of determining the distance between the mobile phone 100 and the object.

Other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like that can be configured in the mobile phone 100 will not be described herein.

Other input devices 130 can be used to receive input numeric or character information, as well as generate key signal inputs related to user settings and function controls of the handset 100. Specifically, other input devices 130 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and light mice (the light mouse is not sensitive to display visual output). One or more of a surface, or an extension of a touch sensitive surface formed by a touch screen. Other input devices 130 are coupled to other input device controllers 171 of I/O subsystem 170 for signal interaction with processor 180 under the control of other device input controllers 171.

The audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the handset 100. The audio circuit 160 can transmit the converted audio data to the speaker 161 for conversion to the sound signal output by the speaker 161. On the other hand, the microphone 162 converts the collected sound signal into a signal, which is received by the audio circuit 160 and then converted into audio data, and then the audio data is output to the radio frequency circuit 110 for transmission to, for example, another mobile phone, or the audio data is output to the memory. 120 for further processing.

The I/O subsystem 170 is used to control external devices for input and output, and may include other device input controllers 171, sensor controllers 172, and display controllers 173. Optionally, one or more other input control device controllers 171 receive signals from other input devices 130 and/or send signals to other input devices 130. Other input devices 130 may include physical buttons (press buttons, rocker buttons, etc.) , dial, slide switch, joystick, click wheel, light mouse (light mouse is a touch-sensitive surface that does not display visual output, or an extension of a touch-sensitive surface formed by a touch screen). It is worth noting that other input control device controllers 171 can be connected to any one or more of the above devices. Display controller 173 in I/O subsystem 170 receives signals from display 140 and/or transmits signals to display 140. After the display 140 detects the user input, the display controller 173 converts the detected user input into an interaction with the user interface object displayed on the display screen 140, ie, implements human-computer interaction. Sensor controller 172 can receive signals from one or more sensors 150 and/or send signals to one or more sensors 150.

The handset 100 also includes a power source 190 (such as a battery) that powers the various components. Preferably, the power source can be logically coupled to the processor 180 through the power management system to manage functions such as charging, discharging, and power consumption through the power management system.

Although not shown, the mobile phone 100 may further include a camera, a Bluetooth module, and the like, and details are not described herein.

When the handset 100 is in proximity to the human body, the antenna 104 will be close to the human body, so it is likely to emit radio frequency signals in the vicinity of the human body. In order to ensure the safety of the electromagnetic radiation emitted by the antenna 104 to the human body, when it is determined that the mobile phone 100 is in the vicinity of the human body, the mobile phone 100 can adjust the electromagnetic wave radiation parameters, such as reducing the electromagnetic wave radiation intensity of the mobile phone and/or adjusting the radiation direction of the electromagnetic wave to reduce the electromagnetic wave radiation. The impact on the human body. When it is determined that the mobile phone 100 is away from the human body, the mobile phone 100 can adjust the electromagnetic wave radiation parameters, for example, increase the electromagnetic wave radiation intensity of the mobile phone and/or adjust the radiation direction of the electromagnetic wave to improve the radio frequency performance of the mobile phone 100.

Since the antenna of the mobile phone 100 has a capacitance relative to the ground, when the human body approaches the antenna of the mobile phone 100, the capacitance of the antenna relative to the earth increases. The change in the capacitance of the antenna relative to the earth can reflect the change in distance between the human body and the antenna. When the distance from the human body to the antenna is from far to near, the capacitance of the antenna relative to the earth gradually becomes larger. As shown in FIG. 3, C1 is greater than C1.

The embodiment of the present invention may send a first waveform signal to the antenna through the processor 180 of the mobile phone 100, and receive a second waveform signal, where the second waveform signal is formed by the first waveform signal being reflected by the antenna, according to the second waveform. The signal adjusts the electromagnetic wave radiation parameters of the mobile phone 100.

The first waveform signal may be a waveform signal such as a rectangular wave, a sawtooth wave, a square wave, a triangular wave, or a sine wave. In the embodiment of the present invention, the processor sends a square wave signal to the antenna as an example, as shown in FIG. 4 . The first square wave signal is reflected by the antenna to form a second square wave signal, and the antenna transmits the second square wave signal to the vicinity Processor. When the first square wave signal passes through the antenna, since the energy absorption energy of the antenna relative to the earth is absorbed, that is, the capacitance charging effect, the rising edge of the second square wave signal is more gentle with respect to the rising edge of the first square wave signal. Similar to the trapezoid, as shown by the dotted line in Figure 4. The capacitance of the antenna relative to the earth is inversely proportional to the distance between the human body and the antenna, that is, the smaller the distance between the human body and the antenna, the larger the capacitance of the antenna relative to the earth; the larger the distance between the human body and the antenna, the larger the antenna The smaller the capacitance of the earth. The larger the capacity of the antenna C1 relative to the earth, the more gentle the rising edge of the second square wave signal. That is: the more energy the capacitor absorbs, the longer the charging time. As indicated by the dashed line in Fig. 4, t1 < t2. T1 is a relatively long distance between the human body and the antenna, that is, an example of charging time of the antenna relative to the capacitance of the earth when the capacitance of the antenna relative to the earth is small. T2 is an example of the distance between the human body and the antenna, that is, an example of the charging time of the antenna relative to the capacitance of the earth when the capacitance of the antenna relative to the earth is large. The processor can adjust the electromagnetic wave radiation parameters of the mobile phone 100 according to the second square wave signal, for example, adjusting the electromagnetic wave radiation intensity and/or the radiation direction of the mobile phone 100. Regarding how the processor adjusts the electromagnetic wave radiation parameters of the mobile phone 100 according to the second square wave signal, it will be described in detail later.

Assume that the path impedance between the processor and the antenna is R, and the capacitance of the antenna relative to the earth is C1. As shown in FIG. 4, an RC oscillation circuit is constructed using R and C1. Assume that the amplitude of the first square wave signal is Vin, and the voltage after charging the capacitor is Vout; the charging time of the capacitor, that is, the rising edge time of the second square wave signal is t. According to the exponential relationship Vout=Vin×(1-e ^{−t÷(R×C1)} ), it is assumed that when the voltage on the capacitor reaches the maximum value of Vin × (1-1/e), that is, 0.63 times Vin, t=R× C, ie: t is the time constant of the circuit. Since the path impedance R is a fixed value, those skilled in the art can obtain the value of the impedance R by a limited number of simulations or tests. The processor can determine the rising edge time of the second square wave signal by analyzing the second square wave signal. Namely: capacitor charging time t. Therefore, according to t=R×C1, the capacitance C1 of the antenna with respect to the earth can be determined by the rising edge time of the second square wave signal.

As will be understood by those skilled in the art, the capacitance of the antenna relative to the earth is inversely proportional to the distance between the human body and the antenna. That is, the smaller the distance between the human body and the antenna, the larger the capacitance of the antenna relative to the earth; the larger the distance between the human body and the antenna, the smaller the capacitance of the antenna relative to the earth. The larger the capacitor, the longer the capacitor charging time; the smaller the capacitor, the shorter the capacitor charging time. Those skilled in the art can pass The finite number of experiments or calculations obtain the correspondence between the capacitance of the antenna relative to the earth and the charging time of the capacitor, and/or the correspondence between the capacitance of the antenna relative to the earth and the distance between the human body and the antenna, and/or the charging time of the capacitor. Correspondence with the distance between the human body and the antenna is as shown in Table 1. The above correspondence may be stored in the memory 120 in advance. For example, when determining the charging time of the antenna relative to the capacitance of the earth, and/or the capacitance of the antenna relative to the earth, the distance between the human body and the antenna can be determined by looking up the correspondence stored in the memory 120.

Table 1

In the embodiment of the present invention, the capacitance of the antenna relative to the earth may be determined according to the rising edge time of the second square wave signal, and the human body may be determined according to the rising edge time of the second square wave signal and/or the capacitance of the antenna relative to the earth. The distance between the antennas and vice versa. Therefore, the rising edge time of the second square wave signal, and/or the capacitance of the antenna relative to the earth, can indirectly reflect the distance between the human body and the antenna, and vice versa.

As an optional implementation manner, when the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is greater than the preset capacitance, and/or the distance between the antenna and the human body When the distance is less than the preset distance, the mobile phone 100 can reduce the electromagnetic radiation intensity of the mobile phone 100 and/or adjust the radiation direction away from the human body to reduce the influence of the electromagnetic wave radiation of the mobile phone 100 on the human body; and maintain the reduced electromagnetic radiation intensity of the mobile phone 100 and/or The adjusted radiation direction until the rising edge time of the second square wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than the pre- When the distance is set, the mobile phone 100 can increase the electromagnetic radiation intensity of the mobile phone 100 and/or adjust the radiation direction to improve the radio frequency performance of the mobile phone 100; Maintaining the increased electromagnetic radiation intensity of the mobile phone 100 and/or the adjusted radiation direction until the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is greater than the preset capacitance When the distance between the antenna and the human body is less than the preset distance, the mobile phone 100 can reduce the electromagnetic radiation intensity of the mobile phone 100 and/or adjust the radiation direction away from the human body, and so on, and will not be described herein. It should be noted that the mobile phone 100 may also adjust the electromagnetic wave radiation parameters in response to the adjustment command of the cellular base station, which is not limited in the present invention.

The rising edge time of the second square wave signal (the charging time of the antenna relative to the capacitance of the earth) can be compared with the preset rising edge time (preset charging time) to determine the rising edge time of the second square wave signal (the antenna is relative to the antenna) The charging time of the earth's capacitor is greater or less than the preset rising edge time. When the rising edge time of the second square wave signal is greater than the preset rising edge time, it is reflected that the distance between the human body and the antenna is less than the preset distance. When the rising edge time of the second square wave signal is less than the preset rising edge time, it is reflected that the distance between the human body and the antenna is greater than the preset distance.

The capacitance of the antenna relative to the ground can be compared with a preset capacitance to determine whether the capacitance of the antenna relative to the ground is greater than or less than a predetermined capacitance. When the capacitance of the antenna relative to the earth is greater than the preset capacitance, it is reflected that the distance between the human body and the antenna is less than the preset distance. When the capacitance of the antenna relative to the ground is less than the preset capacitance, it is reflected that the distance between the human body and the antenna is greater than the preset distance.

The distance between the antenna and the human body can be compared with a preset distance to determine whether the distance between the antenna and the human body is greater than or less than a preset distance.

The processor for transmitting the first waveform signal to the antenna and receiving the second waveform signal in the embodiment of the present invention may be an application processor, a touch screen controller, and other microprocessors, which are not specifically limited in this embodiment of the present invention.

Since the antenna is used to transmit or receive radio frequency signals, the frequency of the radio frequency signal is high. In order to prevent the high frequency signal from being reflected to the processor and the interference processor to determine the capacitance of the antenna relative to the earth, or the accuracy of the distance between the antenna and the human body, a low pass filter may be provided between the processor and the antenna for blocking The high frequency signal is reflected by the antenna to the processor, allowing the lower frequency first square wave signal and the second party The wave signal passes. An antistatic protection device (not shown), such as a TVS antistatic tube, may also be provided between the processor and the antenna to prevent electromagnetic signals introduced by the antenna from damaging the processor.

The embodiment of the present invention can adjust the electromagnetic radiation intensity and/or the radiation direction of the mobile phone 100 by switching the working state of the antenna and/or adjusting the maximum transmission power of the mobile phone 100 according to the second square wave signal determined by the above embodiment.

The following describes how to adjust the electromagnetic radiation intensity and/or radiation direction of the mobile phone 100 by switching the working state of the antenna:

Illustratively, the antenna can include a first antenna and a second antenna. Switching the operational state of the antenna includes switching the antenna from the first antenna radiation to the second antenna radiation to effect adjustment of electromagnetic wave radiation intensity and/or radiation direction of the handset 100. The electromagnetic wave radiation intensity of the second antenna is different from the electromagnetic wave radiation intensity of the first antenna; and/or the electromagnetic wave radiation direction of the second antenna is different from the electromagnetic wave radiation direction of the first antenna. For example, the electromagnetic radiation intensity of the second antenna is smaller than the electromagnetic radiation intensity of the first antenna, and/or the radiation direction of the second antenna is farther from the human body than the radiation direction of the first antenna, that is, the second antenna is opposite to the first antenna. It has less radiation to the human body and hearing aid equipment. Illustratively, the first antenna may be an omnidirectional radiation antenna whose radiation direction is omnidirectional. The second antenna may be a unidirectional radiating antenna, and the radiation direction is farther away from the human body. The second antenna has less radiation to the human body and the hearing aid device.

As an optional implementation manner, the working state of the antenna is switched according to the second square wave signal, including: when the rising edge time of the second square wave signal is greater than a preset rising edge time, and/or the capacitance of the antenna relative to the earth When the distance between the antenna and the human body is greater than the preset distance, the antenna is switched from the first antenna radiation to the second antenna radiation, thereby reducing the electromagnetic radiation intensity of the mobile phone 100 and / Or adjust the direction of electromagnetic radiation of the mobile phone 100 to reduce the impact of the electromagnetic wave radiation of the mobile phone 100 on the human body. After the first antenna radiation is switched to the second antenna radiation, the use is maintained. The two antennas radiate until the rising edge time of the second square wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than the preset distance The antenna is switched from the second antenna radiation to the first antenna radiation to increase the electromagnetic radiation intensity of the mobile phone 100 and/or to adjust the radiation direction to improve the radio frequency performance of the mobile phone 100. Maintaining the use of the first antenna radiation after the second antenna radiation is switched to the first antenna radiation until the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is greater than the preset capacitance And, and/or the distance between the antenna and the human body is less than the preset distance, the antenna is switched from the first antenna radiation to the second antenna radiation, and thus is repeated, and details are not described herein again.

Optionally, the mobile phone 100 may further include an antenna matching circuit; the antenna matching circuit is connected to the antenna; and the antenna matching circuit may include a first matching circuit and a second matching circuit. Switching the working state of the antenna includes switching the antenna matching circuit from the first matching circuit to the second matching circuit to adjust the electromagnetic wave radiation intensity and/or the radiation direction of the mobile phone 100. Wherein, the electromagnetic wave radiation intensity when the antenna is connected to the second matching circuit is different from the electromagnetic wave radiation intensity when the antenna is connected to the first matching circuit; and/or the electromagnetic wave radiation direction when the antenna is connected to the second matching circuit, and the first matching circuit is connected to the antenna The electromagnetic wave radiation direction is different. For example, the electromagnetic radiation intensity when the antenna is connected to the second matching circuit is smaller than the electromagnetic radiation intensity when the antenna is connected to the first matching circuit, and/or the antenna is connected to the second matching circuit and the antenna is connected to the first matching circuit, and the radiation direction is more Keep away from the human body. That is, the antenna is connected to the second matching circuit, and has less radiation to the human body and the hearing aid device than when the antenna is connected to the first matching circuit.

As an optional implementation manner, switching the working state of the antenna according to the second square wave signal further includes: when the rising edge time of the second square wave signal is greater than a preset rising edge time, and/or the antenna relative to the earth When the capacitance is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than the preset distance, the antenna matching circuit is switched from the first matching circuit to the second matching circuit, thereby reducing the electromagnetic radiation intensity and/or adjustment of the mobile phone 100. The electromagnetic wave radiation direction of the mobile phone 100 is to reduce the influence of the electromagnetic wave radiation of the mobile phone 100 on the human body. Maintaining the use of the second matching circuit after switching from the first matching circuit to the second matching circuit until the rising edge time of the second square wave signal is less than the preset rising edge time, and/or day The capacitance of the line relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than the preset distance, and the antenna matching circuit is switched from the second matching circuit to the first matching circuit to increase the electromagnetic wave radiation of the mobile phone 100. The intensity and/or the direction of the radiation is adjusted to enhance the radio frequency performance of the handset 100. After the second matching circuit is switched to the first matching circuit, the first matching circuit is maintained until the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is greater than the preset capacitance And when the distance between the antenna and the human body is less than the preset distance, the antenna matching circuit is switched from the first matching circuit to the second matching circuit, and thus is repeated, and details are not described herein again.

Optionally, the antenna comprises a main antenna, a switching device and a reserved trace; and the switching device is configured to control the main antenna to be connected or disconnected from the reserved trace. Switching the working state of the antenna includes switching the working state of the switching device to connect or disconnect the main antenna with the reserved line to adjust the electromagnetic wave radiation intensity and/or the radiation direction of the mobile phone 100. When the main antenna is connected with the reserved trace, a new antenna is formed; the electromagnetic radiation intensity of the new antenna is different from the electromagnetic radiation intensity of the main antenna; and/or the electromagnetic radiation direction of the new antenna is different from the electromagnetic radiation direction of the main antenna. For example, the electromagnetic radiation intensity of the new antenna is smaller than the electromagnetic radiation intensity of the main antenna, and/or the radiation direction of the new antenna is farther from the human body than the radiation direction of the main antenna, that is, the new antenna is compared with the main antenna to the human body and Hearing aid devices have less radiation. Exemplarily, the main antenna may be an omnidirectional radiation antenna whose radiation directivity is omnidirectional; the new antenna may be a unidirectional radiation antenna, and the radiation direction is farther away from the human body. The new antenna has less radiation to the human body and hearing aid devices than the main antenna.

As an optional implementation manner, switching the working state of the antenna according to the second square wave signal further includes: when the rising edge time of the second square wave signal is greater than a preset rising edge time, and/or the antenna relative to the earth When the capacitance is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than the preset distance, the working state of the switching device is switched, so that the main antenna is connected with the reserved line to form a new antenna, and the new antenna is used for radiation reduction. The electromagnetic wave radiation intensity of the mobile phone 100 and/or the electromagnetic wave radiation direction of the mobile phone 100 are adjusted to reduce the influence of the electromagnetic wave radiation of the mobile phone 100 on the human body. The main antenna is connected to the reserved trace, and the new antenna is used to maintain the radiation after the new antenna is used until the rising edge time of the second square wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is less than the preset capacitance. And/or when the distance between the antenna and the human body is greater than the preset distance, the working state of the switching device is switched, so that the main antenna and the pre- The retention line is disconnected, and the main antenna is used to increase the electromagnetic radiation intensity of the mobile phone 100 and/or adjust the radiation direction to improve the radio frequency performance of the mobile phone 100. After the main antenna is disconnected from the reserved trace, the main antenna radiation is maintained until the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is greater than the preset capacitance, and / Or when the distance between the antenna and the human body is less than the preset distance, the working state of the switching device is switched, and the main antenna is connected with the reserved trace to form a new antenna, and the new antenna is used for radiation, so repeated, and details are not described herein again.

The embodiment of the present invention can also adjust the electromagnetic wave radiation intensity and/or the radiation direction of the mobile phone 100 by adjusting the maximum transmit power of the mobile phone 100 according to the second square wave signal. The following describes adjusting the electromagnetic radiation intensity of the mobile phone 100 by adjusting the maximum transmission power of the mobile phone 100:

As shown in FIG. 5, the processor can control the gain of power amplifier 109 through a control path (eg, control path 20). Control path 20 can be used to process analog and/or digital control signals. The gain of the control power amplifier 109 can be controlled by controlling the magnitude of the control voltage and/or the supply voltage of the power amplifier 109. It is also possible to control the gain of the power amplifier 109 by turning on or off part of the gain stage in the power amplifier 109 to achieve adjustment of the electromagnetic radiation intensity of the handset 100.

As an optional implementation manner, the maximum transmit power of the mobile phone 100 is adjusted according to the second square wave signal, including: when the rising edge time of the second square wave signal is greater than a preset rising edge time, and/or the antenna is relative to the earth The capacitance is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than the preset distance, the control voltage and/or the power supply voltage of the power amplifier 109 is lowered, and/or the partial gain stage in the power amplifier 109 is turned off, The electromagnetic radiation intensity of the mobile phone 100 is reduced to reduce the influence of the electromagnetic wave radiation of the mobile phone 100 on the human body. Maintaining the reduced control voltage and/or supply voltage of the power amplifier 109, and/or maintaining the off state of a portion of the gain stage in the power amplifier 109 until the rising edge time of the second square wave signal is less than the preset rising edge time, And/or the capacitance of the antenna relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than a preset distance, raising the control voltage and/or the power supply voltage of the power amplifier 109, and/or turning on the power amplifier Part of the gain stage in 109 to enhance the handset 100 RF performance. Maintaining the control voltage and/or supply voltage of the boosted power amplifier 109, and/or maintaining the on state of a portion of the gain stage in the power amplifier 109 until the rising edge time of the second square wave signal is greater than the preset rising edge time And/or the capacitance of the antenna relative to the earth is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than a predetermined distance, reducing the control voltage and/or the supply voltage of the power amplifier 109, and/or turning off the power amplifier The partial gain stages in 109 are so repeated that they are not described here.

When the mobile phone is located at the far end of the cell, the radio frequency signal transmitted by the mobile phone passes through the long-distance transmission path to reach the base station; when the mobile phone is blocked by buildings or other, the radio frequency signal must be reflected and refracted multiple times in the wireless shadow area. Attenuation of long-distance transmission; radio frequency signals are also interfered by other channels, such as: adjacent channel, co-channel interference, etc. Therefore, the transmission power of the mobile phone should be high enough to overcome the loss, reflection and refraction of the above-mentioned radio wave propagation path. Attenuation, as well as interference from other radio waves. At the same time, in order to reduce interference, radiation and power consumption of other devices, the transmission power of the mobile phone should be as low as possible. Therefore, the mobile phone needs to send enough RF power to ensure the communication quality. At the same time, because the mobile phone transmits more power, the higher the electric field strength formed in the human body, the greater the RF radiation power absorbed by the human body, so the communication quality is guaranteed. Under the premise, the smaller the mobile phone's transmission power, the better. As shown in Figure 6, a plot of maximum transmit power versus time is provided. Wherein, the ordinate is the maximum transmission power of the mobile phone 100, and the abscissa is time. At time t0, the mobile phone 100 detects that the rising edge time of the second square wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than the preset. The maximum transmission power of the mobile phone 100 is P2. At time t1, the mobile phone 100 detects that the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than the preset. Distance, handset 100 reduces the maximum transmit power to P1 to ensure that the electromagnetic radiation emitted by antenna 104 is safe to the human body, although the cellular network may require higher transmit power during the t1 to t2 time period. At time t2, the mobile phone 100 detects that the rising edge time of the second square wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is less than the preset capacitance, and/or the distance between the antenna and the human body is greater than the pre- With the distance set, the mobile phone 100 restores the maximum transmit power to P2. At time t3, mobile phone 100 again The rising edge time of the second square wave signal is detected to be greater than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is greater than the preset capacitance, and/or the distance between the antenna and the human body is less than the preset distance, and the mobile phone 100 Reduce the maximum transmit power to P1. It should be noted that the mobile phone 100 can also reduce the output power in response to the adjustment command of the cellular base station (not shown in FIG. 6).

As an optional implementation manner, when the electromagnetic wave radiation intensity and/or the radiation direction of the mobile phone 100 is adjusted, the current position of the mobile phone 100 may also be determined by considering the location module or the location data provided by the user. The mobile phone 100 determines the upper limit value of the SAR specified by the national or regional regulations of the current location, and further determines the switching scheme of the antenna working state according to the upper limit value of the SAR, and/or the maximum transmitting power of the mobile phone 100. For example, when it is determined that the mobile phone 100 is located in a country where the SAR is relatively large, the maximum transmission power of the mobile phone 100 can be relatively large as compared with a country that allows the SAR to be relatively small. In this way, according to the regulations of the SAR of the country or region to which the mobile phone 100 is located, the electromagnetic radiation intensity and/or the radiation direction of the mobile phone 100 can be more specifically adjusted.

Optionally, the mobile phone 100 can also use the sensor to determine whether there is an object near the mobile phone 100. When it is determined that there is an object in the vicinity of the mobile phone 100, the step of transmitting the first waveform signal to the antenna is further performed.

In the embodiment of the present invention, the first waveform signal is sent to the antenna by the processor, and the second waveform signal is received. The second waveform signal is formed by the first waveform signal being reflected by the antenna; and the electromagnetic wave radiation intensity of the mobile terminal is adjusted according to the second waveform signal. Or a radiation direction, wherein the characteristics of the second waveform signal may reflect the distance between the human body and the antenna of the mobile phone 100. The embodiment of the invention simplifies the implementation of adjusting the electromagnetic wave radiation parameters of the mobile terminal.

As shown in FIG. 7, an embodiment of the present invention provides a method for adjusting electromagnetic wave radiation parameters of a mobile terminal. For convenience of description, the embodiment of the present invention uses a mobile phone as an example for exemplary description. In the following, the mobile terminal is used as an example of a mobile phone, and the method for adjusting the electromagnetic wave radiation parameters of the mobile terminal is introduced in detail, including:

The mobile phone 100 transmits a first waveform signal to the antenna (step 702), receives a second waveform signal (step 703), the second waveform signal is formed by the first waveform signal being reflected by the antenna, and adjusting the electromagnetic wave radiation of the mobile phone 100 according to the second waveform signal. Parameters (step 704), for example, adjusting the electromagnetic radiation intensity and/or radiation direction of the handset 100.

As a possible implementation manner, the sensor may be used to detect whether there is an object near the mobile phone 100 (step 701). When it is detected that there is an object near the mobile phone 100, step 702 is performed.

The received second waveform signal is formed by the first waveform signal being reflected by the antenna. For the characteristics of the second waveform signal, refer to the embodiment of the present invention, because the antenna of the mobile phone 100 has capacitance relative to the ground, when the first waveform signal passes through the antenna. The capacitor charging effect, so the rising edge of the second waveform signal is more gradual with respect to the rising edge of the first waveform signal. When the mobile phone antenna approaches the human body, the capacitance of the antenna relative to the earth becomes larger, and the rising edge time of the second waveform signal becomes longer. The closer the distance between the antenna of the mobile phone and the human body, the larger the capacitance of the antenna relative to the earth, and the longer the rising edge of the second waveform signal, which will not be described here.

For the implementation of step 704, refer to the rising edge time of the second square wave signal, and/or the capacitance of the antenna relative to the earth, and/or the distance between the antenna and the human body, by switching the working state of the antenna. And/or adjusting the maximum transmit power of the mobile phone to achieve an embodiment and a beneficial effect of reducing or increasing the intensity of the electromagnetic wave radiation and/or adjusting the radiation direction, based on the same inventive concept, which will not be repeated herein. For the implementation of the 704A, refer to the implementation manner of switching the antenna, and/or switching the antenna matching circuit, and/or switching the working state of the switching device, which is implemented in the foregoing embodiment, to implement an operation state of switching the antenna; The embodiment described above implements an embodiment of adjusting the maximum transmit power of the handset by adjusting the control voltage and/or supply voltage of the power amplifier, and/or by adjusting the gain of the power amplifier.

Optionally, the country or region where the mobile phone 100 is located may be determined, the upper limit value of the SAR specified by the regulations of the country or region may be determined, and the switching scheme of the working state of the antenna may be further determined according to the upper limit value of the SAR, and/or the mobile phone Maximum transmit power.

For the implementation of step 701, reference may be made to the embodiment and the beneficial effects of using a sensor (such as a proximity sensor, an ambient light sensor, an accelerometer sensor, etc.) to assist in determining whether there is an object in the vicinity of the mobile phone 100, which is described in the above embodiments. I won't go into details here.

As shown in FIG. 8, an embodiment of the present invention further provides an apparatus. The apparatus includes a transmitting unit 801, a receiving unit 802, and a processing unit 803.

The sending unit 801 is configured to send a first waveform signal to an antenna. The first waveform signal may be a rectangular wave, a sawtooth wave, a square wave, a triangular wave, or a sine wave signal.

The receiving unit 802 is configured to receive a second waveform signal, where the second waveform signal is formed by the first waveform signal being reflected by the antenna. For the characteristics of the second waveform signal, as described in the above embodiment, since the antenna of the mobile phone 100 has capacitance relative to the ground, when the first waveform signal passes through the antenna, the capacitor charging effect, so the rising edge of the second waveform signal is relative to the first The rising edge of the waveform signal is more gradual. When the antenna of the mobile phone approaches the human body, the capacitance of the antenna relative to the earth becomes larger, and the rising edge time of the second waveform signal becomes longer. The closer the distance between the antenna of the mobile phone and the human body, the larger the capacitance of the antenna relative to the earth, and the longer the rising edge of the second waveform signal, which will not be described here.

The processing unit 803 is configured to adjust an electromagnetic wave radiation intensity and/or a radiation direction of the device according to the second waveform signal. For the implementation and the beneficial effects of the processing unit, refer to the rising edge time according to the second square wave signal introduced in the above embodiment, and/or the capacitance of the antenna relative to the earth, and/or the distance between the antenna and the human body. Embodiments and advantageous effects of reducing or increasing the intensity of electromagnetic wave radiation and/or adjusting the radiation direction are realized by switching the operating state of the antenna and/or adjusting the maximum transmission power of the mobile phone. Based on the same inventive concept, details are not described herein again.

The processing unit 803 may further include a determining subunit 8031 and a processing subunit 8032.

Determining the implementation of the sub-unit 8031 and the beneficial effects can be referred to the embodiment of the above embodiment to determine the rising edge time according to the second waveform signal, and/or the capacitance of the antenna relative to the earth, and/or the distance between the antenna and the human body. And the beneficial effects are based on the same inventive concept, and are not described herein again.

Embodiments of the processing sub-unit 8032 and the beneficial effects can be adjusted according to the rising edge time, and/or the capacitance of the antenna relative to the earth, and/or the distance between the antenna and the human body, and/or the electromagnetic radiation intensity and/or The embodiment of the radiation direction and the beneficial effects are based on the same inventive concept and will not be described herein.

The processing subunit may also include an antenna subunit 80321 and a power control subunit 80322.

The antenna sub-unit 80321 is configured to switch the working state of the antenna according to the rising edge time, and/or the capacitance of the antenna relative to the earth, and/or the distance between the antenna and the human body. For the implementation of the antenna subunit, the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is greater than the preset capacitance, and/or the antenna and the human body. When the distance between the distances is less than the preset distance, the antenna is switched from the first antenna radiation to the second antenna radiation; and/or the antenna matching circuit is switched from the first matching circuit to the second matching circuit; and/or the switching device is switched The working state is such that the main antenna is connected to the reserved line; the electromagnetic radiation intensity of the mobile phone 100 is reduced and/or the electromagnetic wave radiation direction of the mobile phone 100 is adjusted to reduce the influence of the electromagnetic wave radiation of the mobile phone 100 on the human body. Maintaining the used antenna radiation until the rising edge time of the second square wave signal is less than the preset rising edge time, and/or the capacitance of the antenna relative to the ground is less than the preset capacitance, and/or the distance between the antenna and the human body When the distance is greater than the preset distance, the antenna is switched from the second antenna radiation to the first antenna radiation; and/or the antenna matching circuit is switched from the second matching circuit to the first matching circuit; and/or the switching device is operated. The main antenna is disconnected from the reserved trace to increase the electromagnetic radiation intensity of the mobile phone 100 and/or adjust the radiation direction to improve the radio frequency performance of the mobile phone 100. Maintaining the used antenna radiation until the rising edge time of the second square wave signal is greater than the preset rising edge time, and/or the capacitance of the antenna relative to the earth is greater than the preset capacitance, and/or the distance between the antenna and the human body When less than the preset distance, the antenna is switched from the first antenna radiation to the second antenna radiation; and/or the antenna matching circuit is switched from the first matching circuit to the second matching circuit; and/or the switching device is operated. The main antenna is connected to the reserved line, and the details are not repeated here; based on the same inventive concept, details are not described herein again.

The power control sub-unit 80322 is configured to: adjust the maximum transmit power of the device according to the rising edge time, and/or the capacitance of the antenna relative to the earth, and/or the distance between the antenna and the human body, and implement the adjustment device. The electromagnetic radiation intensity of the electromagnetic wave. For the implementation of the power control sub-unit, refer to the embodiment of the invention, by adjusting the control voltage and/or the power supply voltage of the power amplifier, and/or adjusting the gain of the power amplifier, to implement an adjustment of the electromagnetic radiation intensity. I will not repeat them here.

Optionally, the apparatus provided by the embodiment of the present invention may further include a determining unit 804, configured to determine whether an object is in proximity; when it is determined by the determining unit 804 that an object is approaching, the first waveform signal is sent to the antenna by the sending unit 801. .

For the implementation of the determining unit 804, refer to the implementation of detecting the infrared reflected light, the ambient light, and/or the magnitude of the acceleration to detect whether an object is approaching the device, which is described in the above embodiment. .

Optionally, the apparatus provided by the embodiment of the present invention may further include a positioning unit 805, configured to determine a location where the device is located, and the processing unit 803 performs an adjustment of the electromagnetic wave radiation intensity and/or the radiation direction according to the position determined by the positioning device, and the implementation manner. For the beneficial effects, refer to the implementation manner and the beneficial effects of determining the location of the mobile phone 100 by using the positioning module, which are described in the foregoing embodiments, based on the same inventive concept, and details are not described herein again.

In the embodiment of the present invention, the capacitance may represent the capacitance of the mobile terminal antenna relative to the earth, and may also represent the capacitance value of the mobile terminal antenna relative to the earth.

It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be performed by a program, and the program may be stored in a computer readable storage medium, which is non-transitory ( English: non-transitory) media, such as random access memory, read-only memory, flash memory, hard disk, solid state disk, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), CD (English: optical disc) And any combination thereof.

The present invention has been described with reference to the respective flowcharts and block diagrams of the method and apparatus of the embodiments of the invention. It will be understood that each flow and block of the flowchart illustrations. FIG. Processing of these computer program instructions to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing device To generate a machine such that instructions executed by a processor of a computer or other programmable data processing device generate functions for implementing the functions specified in one or more blocks of a flow or a flow diagram and a block diagram of a flowchart. Device.

Claims

A mobile terminal, characterized in that the mobile terminal comprises: a processor, a memory and an antenna;

The memory is for storing computer executable program code, the program code comprising instructions;

The processor is configured to execute the instruction to:

Transmitting a first waveform signal to the antenna;

Receiving a second waveform signal, wherein the second waveform signal is formed by the first waveform signal being reflected by the antenna;

And adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to the second waveform signal.
The mobile terminal according to claim 1, wherein the processor adjusts an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to the second waveform signal;

The processor determines a first time according to the second waveform signal, where the first time is a rising edge time of the second waveform signal; and according to the first time, adjusting an electromagnetic wave radiation intensity of the mobile terminal and / or radiation direction; or

The processor determines a first capacitance according to the second waveform signal, where the first capacitance is a capacitance of the antenna relative to the ground; and according to the first capacitance, adjusting an electromagnetic wave radiation intensity of the mobile terminal and/or Radiation direction; or

The processor determines a distance between the object and the antenna according to the second waveform signal; and adjusts an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to a distance between the object and the antenna.
A mobile terminal according to claim 1 or 2, characterized in that

The first waveform signal is a rectangular wave, a sawtooth wave, a square wave, a triangular wave, or a sine wave signal.
The mobile terminal according to any one of claims 1 to 3, wherein said adjusting said shift The electromagnetic radiation intensity and/or radiation direction of the mobile terminal includes: the processor switches the working state of the antenna, wherein:

When the operating state of the antenna changes, the electromagnetic wave radiation intensity and/or radiation direction of the mobile terminal is different.
The mobile terminal of claim 4, wherein the antenna comprises a first antenna and a second antenna;

The processor switches the working state of the antenna, including:

The processor switches the antenna from the first antenna radiation to the second antenna radiation;

The electromagnetic radiation intensity of the second antenna is different from the electromagnetic radiation intensity of the first antenna; and/or

The electromagnetic wave radiation direction of the second antenna is different from the electromagnetic wave radiation direction of the first antenna.
The mobile terminal according to claim 4, wherein the mobile terminal further comprises an antenna matching circuit; the antenna matching circuit is connected to the antenna; and the antenna matching circuit comprises a first matching circuit and a second matching circuit ;

The processor switches the working state of the antenna, including:

The processor switches the antenna matching circuit from the first matching circuit to the second matching circuit;

The intensity of the electromagnetic wave radiation when the antenna is connected to the second matching circuit is different from the intensity of the electromagnetic wave when the antenna is connected to the first matching circuit; and/or

The direction of electromagnetic wave radiation when the antenna is connected to the second matching circuit is different from the direction of electromagnetic wave radiation when the antenna is connected to the first matching circuit.
The mobile terminal according to claim 4, wherein the antenna comprises a main antenna, a switching device, and a reserved trace; the switching device is configured to control the main antenna and the reserved trace Connect or disconnect;

The processor switches the working state of the antenna, including:

The processor switches an operating state of the switching device, and connects the main antenna to the reserved trace to form a new antenna;

The electromagnetic radiation intensity of the new antenna is different from the electromagnetic radiation intensity of the main antenna; and/or

The electromagnetic wave radiation direction of the new antenna is different from the electromagnetic wave radiation direction of the main antenna.
The mobile terminal of claim 1, wherein the mobile terminal further comprises a power amplifier;

The adjusting the electromagnetic radiation intensity of the mobile terminal includes:

The processor adjusts a control voltage and/or a power supply voltage of the power amplifier, wherein:

The electromagnetic wave radiation intensity of the mobile terminal is different when the control voltage and/or the power supply voltage of the power amplifier changes; and/or

The processor adjusts a gain of the power amplifier, wherein:

When the gain of the power amplifier changes, the electromagnetic wave radiation intensity of the mobile terminal is different.
The mobile terminal according to any one of claims 1 to 8, wherein the processor adjusts the electromagnetic radiation intensity of the mobile terminal according to the second waveform signal;

The processor reduces an electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal; and/or the processor increases an electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal.
The mobile terminal according to any one of claims 1 to 9, wherein the mobile terminal further comprises a sensor; the sensor comprises a proximity sensor, an ambient light sensor, and/or an accelerometer sensor;

The processor receives sensing data sent by the sensor;

And when the processor determines that an object is close to the mobile terminal according to the sensing data, transmitting a first waveform signal to the antenna.
A method for adjusting electromagnetic wave radiation parameters of a mobile terminal, the mobile terminal comprising an antenna, the method comprising:

Transmitting, by the mobile terminal, a first waveform signal to the antenna;

Receiving a second waveform signal, wherein the second waveform signal is formed by the first waveform signal being reflected by the antenna;

And adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to the second waveform signal.
The method according to claim 11, wherein the adjusting the electromagnetic radiation intensity and/or the radiation direction of the mobile terminal according to the second waveform signal comprises:

Determining, according to the second waveform signal, a first time, the first time being a rising edge time of the second waveform signal; adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to the first time ;or

Determining, according to the second waveform signal, a first capacitance, wherein the first capacitance is a capacitance of the antenna relative to the ground; and adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to the first capacitance; or

Determining a distance between the object and the antenna according to the second waveform signal; adjusting an electromagnetic wave radiation intensity and/or a radiation direction of the mobile terminal according to a distance between the object and the antenna.
A method according to claim 11 or 12, wherein

The first waveform signal is a rectangular wave, a sawtooth wave, a square wave, a triangular wave, or a sine wave signal.
The method according to any one of claims 11 to 13, wherein the adjusting the electromagnetic radiation intensity and/or the radiation direction of the mobile terminal comprises: switching the working state of the antenna, among them:

When the operating state of the antenna changes, the electromagnetic wave radiation intensity and/or radiation direction of the mobile terminal is different.
The method of claim 14 wherein said antenna comprises a first antenna and a second antenna;

The switching the working state of the antenna includes:

Switching the antenna from the first antenna radiation to the second antenna radiation;

The electromagnetic radiation intensity of the second antenna is different from the electromagnetic radiation intensity of the first antenna; and/or

The electromagnetic wave radiation direction of the second antenna is different from the electromagnetic wave radiation direction of the first antenna.
The method according to claim 14, wherein said mobile terminal further comprises an antenna matching circuit; said antenna matching circuit is coupled to said antenna; said antenna matching circuit comprising a first matching circuit and a second matching circuit;

The switching the working state of the antenna includes:

Switching the antenna matching circuit from the first matching circuit to the second matching circuit;

The electromagnetic wave radiation intensity when the antenna is connected to the second matching circuit is different from the electromagnetic wave radiation intensity when the antenna is connected to the first matching circuit; and/or

The direction of electromagnetic wave radiation when the antenna is connected to the second matching circuit is different from the direction of electromagnetic wave radiation when the antenna is connected to the first matching circuit.
The method of claim 14 wherein said antenna comprises a main antenna, a switching device, and a reserved trace; said switching device for controlling said main antenna to be connected or disconnected from said reserved trace ;

The switching the working state of the antenna includes:

Switching an operating state of the switching device to connect the main antenna to the reserved trace to form a new antenna;

The electromagnetic radiation intensity of the new antenna is different from the electromagnetic radiation intensity of the main antenna; and/or

The electromagnetic wave radiation direction of the new antenna is different from the electromagnetic wave radiation direction of the main antenna.
The method according to any one of claims 11-17, wherein the adjusting the electromagnetic radiation intensity of the mobile terminal comprises:

Adjusting the control voltage and/or supply voltage of the power amplifier, wherein:

The electromagnetic wave radiation intensity of the mobile terminal is different when the control voltage and/or the power supply voltage of the power amplifier changes; and/or

Adjusting the gain of the power amplifier, wherein:

When the gain of the power amplifier changes, the electromagnetic wave radiation intensity of the mobile terminal is different.
The method according to any one of claims 11 to 18, wherein the adjusting the electromagnetic radiation intensity of the mobile terminal according to the second waveform signal comprises:

Decreasing an electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal; and/or increasing an electromagnetic wave radiation intensity of the mobile terminal according to the second waveform signal.
The method of any of claims 11 to 19, wherein the method further comprises:

Determining whether an object is in proximity to the mobile terminal;

The mobile terminal transmits a first waveform signal to the antenna when it is determined that an object is in proximity to the mobile terminal.
An apparatus, comprising: a transmitting unit, a receiving unit, and a processing unit:

The sending unit is configured to send a first waveform signal to an antenna;

The receiving unit is configured to receive a second waveform signal, where the second waveform signal is the first Forming a waveform signal through the antenna;

The processing unit is configured to adjust an electromagnetic wave radiation intensity and/or a radiation direction of the device according to the second waveform signal.
The apparatus according to claim 21, wherein said processing unit comprises a determining subunit and a processing subunit;

The determining subunit is configured to:

Determining a first time according to the second waveform signal, the first time being a rising edge time of the second waveform signal; or

Determining, according to the second waveform signal, a first capacitance, where the first capacitance is a capacitance of the antenna relative to the earth; or

Determining a distance between the object and the antenna according to the second waveform signal;

The processing subunit is configured to:

According to the first time, or according to the first capacitance, or according to a distance between the object and the antenna;

The electromagnetic radiation intensity and/or radiation direction of the device is adjusted.
A device according to claim 21 or 22, wherein

The first waveform signal is a rectangular wave, a sawtooth wave, a square wave, a triangular wave, or a sine wave signal.
The apparatus according to claim 22 or 23, wherein said processing subunit comprises an antenna subunit;

The antenna subunit is configured to:

According to the first time, or according to the first capacitance, or according to a distance between the object and the antenna;

Switching the antenna from a first antenna radiation to a second antenna radiation;

The electromagnetic wave radiation intensity of the second antenna and the electromagnetic wave radiation intensity of the first antenna are not Same; and/or

The electromagnetic wave radiation direction of the second antenna is different from the electromagnetic wave radiation direction of the first antenna.
The apparatus according to claim 22 or 23, wherein said processing subunit comprises an antenna subunit;

The antenna subunit is configured to:

According to the first time, or according to the first capacitance, or according to a distance between the object and the antenna;

Switching the antenna matching circuit from the first matching circuit to the second matching circuit;

The intensity of the electromagnetic wave radiation when the antenna is connected to the second matching circuit is different from the intensity of the electromagnetic wave when the antenna is connected to the first matching circuit; and/or

The direction of electromagnetic wave radiation when the antenna is connected to the second matching circuit is different from the direction of electromagnetic wave radiation when the antenna is connected to the first matching circuit.
The apparatus according to claim 22 or 23, wherein said processing subunit comprises an antenna subunit;

The antenna subunit is configured to:

According to the first time, or according to the first capacitance, or according to a distance between the object and the antenna;

Switching the working state of the switching device to connect the main antenna with the reserved trace to form a new antenna;

The electromagnetic radiation intensity of the new antenna is different from the electromagnetic radiation intensity of the main antenna; and/or

The electromagnetic wave radiation direction of the new antenna is different from the electromagnetic wave radiation direction of the main antenna.
The apparatus according to any one of claims 22-26, wherein the processing subunit comprises a power control subunit;

The power control subunit is configured to:

Adjusting a control voltage and/or a power supply voltage of the power amplifier according to the first time, or according to the first capacitance, or according to a distance between the object and the antenna, wherein:

When the control voltage and/or the power supply voltage of the power amplifier changes, the electromagnetic radiation intensity of the device is different; and/or

Adjusting the gain of the power amplifier according to the first time, or according to the first capacitance, or according to a distance between the object and the antenna, wherein:

The electromagnetic radiation intensity of the device is different when the gain of the power amplifier changes.
The apparatus according to any one of claims 21 to 27, wherein the processing unit adjusts an electromagnetic wave radiation intensity and/or a radiation direction of the device according to the second waveform signal, and specifically includes:

The processing unit reduces the electromagnetic radiation intensity of the device according to the second waveform signal; and/or increases the electromagnetic radiation intensity of the device according to the second waveform signal.
The apparatus according to any one of claims 21 to 28, wherein the apparatus further comprises a determining unit,

The determining unit is configured to determine whether an object is in proximity to the device;

The transmitting unit transmits a first waveform signal to the antenna when the determining unit determines that an object is in proximity to the device.
A storage medium, characterized in that the storage medium is a non-transitory computer readable storage medium, the non-volatile computer readable storage medium storing at least one program, each of the programs including an instruction, The instructions, when executed by a mobile terminal having a processor or an antenna, cause the mobile terminal to perform a method of adjusting electromagnetic wave radiation parameters of the mobile terminal according to any one of claims 11-20.