CN105591192A - Two-in-one SAR reduction antenna structure - Google Patents
Two-in-one SAR reduction antenna structure Download PDFInfo
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- CN105591192A CN105591192A CN201510988075.XA CN201510988075A CN105591192A CN 105591192 A CN105591192 A CN 105591192A CN 201510988075 A CN201510988075 A CN 201510988075A CN 105591192 A CN105591192 A CN 105591192A
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- antenna
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- branching antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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Abstract
The invention provides a two-in-one SAR(Specific Absorption Rate) reduction antenna structure, comprising an antenna assembly and an SAR reduction induction chip. The antenna assembly comprises a first branch antenna integrating SAR reduction induction and antenna radiation, wherein the first branch antenna is in connection with the SAR reduction induction chip. The two-in-one SAR reduction antenna structure reduces the occupation space of an SAR reduction device under the condition of guaranteeing antenna performance as much as possible, not only reduces production costs, but also reduces the occupation space of the SAR reduction device, is suitable for a plurality of antenna structures, and is highly flexible.
Description
Technical field
The present invention relates to field of antenna, more specifically, relate to a kind of two-in-one SAR of falling antenna structure.
Background technology
Along with the development of wireless communication technology, the number of devices sharp increase of emitting electromagnetic wave, the public is for safety problem growing interest. Although the energy of the Wireless Telecom Equipment such as mobile phone, notebook transmitting in the time of normal work is very low, these handheld devices are very near apart from tissue in the time of normal work, in human body, will produce induction field. Industry is introduced biological dose specific absorption rate (SAR) and is characterized the influence degree of electromagnetic radiation to human body.
For ensure electromagnetic radiation on the impact of human body the scope a safety, countries in the world and linked groups have formulated a series of standards for electromagnetic radiation. SAR(SpecificAbsorptionRate), be defined as within the unit interval electromagnetic power that tissue absorbed or consumed of unit mass. In actual applications, SAR is a measured value, and unit is W/kg. The heat energy of SAR value representation mobile communication terminal can be known from experience and cause how many impacts people, and numerical value is larger, represents larger on the impact of human body; Otherwise impact is less.
For the SAR test that makes antenna meets standard, current routine is fallen SAR mode and is mainly contained: it is lower than the SAR value of Monopole that (1) changes antenna Pattern(PIFA), but this mode very flexible; (2) between antenna and human body, increase shielding device, as conductive foam, absorbing material etc., but this mode can reduce the radiance TRP/TIS of antenna; (3) input power of dynamic control antenna; as patent " SAR device, protective sleeve and terminal fall in intelligence " but this mode are used for judging whether to sense human body proximity or contact except increasing; and outside the input power of control antenna assembly induction control chip; also need extra whether to approach inductive component for responding to human body; and inductive component is on different circuit boards from antenna assembly; this has not only increased cost payout; also taken more board internal area, brought larger challenge to narrow and small wireless terminal inner space originally simultaneously. So, for above technology existing dumb, reduce radiance, increase the deficiencies such as cost, area occupied, the mode that proposes a kind of novel reduction SAR seems and is extremely necessary.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of two-in-one SAR of falling antenna structure of simple and flexible.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of two-in-one SAR of falling antenna structure, comprise antenna module and fall SAR induction chip, described antenna module comprises and falls SAR induction and the first two-in-one Branching Antenna of aerial radiation, described the first Branching Antenna with fall SAR induction chip and be connected.
Using a part for antenna module as the two-in-one structure that falls SAR induction and aerial radiation simultaneously, do not need to fall SAR inductive component while setting in addition, reduce and taken up room, reduce costs, and this design can be used in multiple antenna structure, flexibility is strong.
Further, described antenna module also comprises distributing point and earth point, and the second Branching Antenna being connected with distributing point, the 3rd Branching Antenna that is connected with earth point, and described the first Branching Antenna is isolated with distributing point and earth point respectively.
As an embodiment, described antenna is coupling feed antennas, and described the first Branching Antenna is not connected with the second Branching Antenna, and the first Branching Antenna and the 3rd Branching Antenna are isolated by isolating device.
Further, described isolating device is isolated the first Branching Antenna and the 3rd Branching Antenna in the position near earth point.
As another embodiment, described antenna is PIFA antenna, and described the first Branching Antenna is respectively by two isolating devices and the second Branching Antenna and the isolation of the 3rd Branching Antenna.
Further, one of them of described two isolating devices isolated the first Branching Antenna and the second Branching Antenna in the position near distributing point, and another isolating device is isolated the first Branching Antenna and the 3rd Branching Antenna in the position near earth point.
Further, described isolating device is electric capacity.
Further, described electric capacity is the lumped capacitive elements that capacitance is more than or equal to 20pF.
Further, on described the first Branching Antenna, arrange and be connected in and fall SAR induction chip away from the wiring point of distributing point.
Further, described wiring point is arranged at the first Branching Antenna one end near earth point.
Compared with prior art, tool of the present invention has the following advantages:
The invention provides a kind of two-in-one SAR of falling antenna structure, guaranteeing that antenna meets the requirement while of communication frequency band as far as possible, in ensureing antenna performance as far as possible, reduce falling taking up room of SAR device, not only reduce production cost, also reduced and fallen taking up room of SAR device, be used in multiple antenna structure, flexibility is strong.
Brief description of the drawings
Fig. 1 is that the two-in-one coupling feed antennas of falling SAR antenna structure of the present invention is implemented structural representation.
Fig. 2 is that the two-in-one PIFA antenna that falls SAR antenna structure of the present invention is implemented structural representation.
Fig. 3 is the antenna schematic diagram of the two-in-one embodiment that falls SAR antenna structure of the present invention.
Fig. 4 is the standing-wave ratio figure of the antenna of the two-in-one embodiment that falls SAR antenna structure of the present invention.
Detailed description of the invention
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the present invention is explained in further detail.
Embodiment 1
The present embodiment provides a kind of two-in-one SAR of falling antenna structure, utilize isolating device by a Branching Antenna of antenna cabling and distributing point and earth point isolation, this Branching Antenna in retaining original antenna function as falling SAR inductive component, whether be used for responding to human body near to or in contact with antenna module, SAR induction chip falls in this Branching Antenna connection, the information of the human body proximity sensing or Contact antenna assembly is passed to and falls SAR induction chip, fall SAR induction chip and receive the input power of information control antenna assembly, this antenna structure scheme makes full use of the environment of antenna self, make intelligence fall SAR inductive component and antenna module unites two into one, can reduce the radiation of antenna to human body on the one hand, not only can reduce costs on the other hand, reduce area occupied, and applying flexible.
As shown in Figure 1, the present embodiment provides a kind of two-in-one SAR of falling antenna structure of the feed antennas that is coupled, and this antenna structure mainly comprises distributing point 101, earth point 102 and the first Branching Antenna 104, the second Branching Antenna 103, the 3rd Branching Antenna 106. The second Branching Antenna 103 is directly connected with distributing point 101, is not connected, and forms the gap of proper width with the first Branching Antenna 104. The first Branching Antenna 104 connects one end of the 3rd Branching Antenna by lumped capacitive elements 105, the other end of the 3rd Branching Antenna connects earth point 102, thereby the metal part of covering copper region or board itself that is board mainboard with the earth of communication apparatus board is connected, wherein lumped capacitive elements 105 is arranged in the one end near earth point 102, preferably, the capacitance of lumped capacitive elements 105 is greater than 20pF. After isolation by lumped capacitive elements, antenna module is divided into three parts, the second Branching Antenna 103 being directly connected with distributing point 101, the 3rd Branching Antenna 104 being directly connected with earth point 102 and first Branching Antenna 104 of keeping apart with board the earth, wherein, the first Branching Antenna 104 is as falling SAR inductive component, inductive component is provided with wiring point 0 near one end of earth point, by cable line by wiring point 0 with fall SAR induction chip and connect together, thereby form complete SAR device and the two-in-one antenna structure of antenna module of falling.
Concrete, the second Branching Antenna is T-shaped, vertically end end connects distributing point, it is a bit of to downward-extension that the first Branching Antenna is arranged at top and the two ends of the second Branching Antenna, wherein lumped capacitive elements 105 and the 3rd Branching Antenna ground connection are passed through in one end, and wiring point 0 is set above lumped capacitive elements 105.
Embodiment 2
As shown in Figure 2, the present embodiment provides a kind of two-in-one SAR of falling antenna structure of PIFA antenna, and this antenna structure comprises distributing point 201, earth point 202 and the first Branching Antenna 203, the second Branching Antenna 206 and the 3rd Branching Antenna 207. the first Branching Antenna 203 is connected with one end of the second Branching Antenna 206 by the first lumped capacitive elements 204, the other end of the second Branching Antenna 206 connects distributing point 201, the first Branching Antenna connects one end of the 3rd Branching Antenna 207 simultaneously by the second lumped capacitive elements 205, the other end of the 3rd Branching Antenna 207 connects earth point 202, connects together by earth point 202 and board the earth. the first lumped capacitive elements 204, the second lumped capacitive elements 205 are separately positioned on the first Branching Antenna 203 near the position of distributing point 201 and near on the position of earth point 202, wherein, the capacitance of the first lumped capacitive elements 204, the second lumped capacitive elements 205 is all greater than 20pF. after isolation by two lumped capacitive elements, antenna module is divided into three parts, the second Branching Antenna 207 being directly connected with distributing point 201, the 3rd Branching Antenna being directly connected with earth point 202, and both with distributing point isolation also with the first Branching Antenna 203 of earth point isolation, using this first Branching Antenna 203 as falling SAR inductive component, near one end of earth point, wiring point 0 is set at the first Branching Antenna 203, by single cable line, the wiring point of the first Branching Antenna 203 0 and induction chip are connected together, form complete SAR device and the two-in-one antenna structure of antenna module of falling.
Concrete, the horizontal bonding jumper of described the first Branching Antenna 203 1, and at middle part to downward-extension two parts, wherein a part is connected distributing point by the first lumped capacitive elements 204 with the second Branching Antenna 206, another part is connected earth point by the second lumped capacitive elements 205 with the 3rd Branching Antenna 207, and above the second lumped capacitive elements 205, wiring point 0 is set.
Above-described embodiment 1 and 2 is two kinds of attainable two-in-one principle structure embodiment that fall SAR antenna structure, in practical application, can suitably adjust antenna cabling form according to actual conditions, makes antenna meet described frequency range coverage requirement.
Embodiment 3
As shown in Figure 3, the be coupled concrete antenna form of implementing of the two-in-one SAR of falling antenna structure of feed antennas of the present embodiment embodiment 1, the present embodiment provides a kind of two-in-one SAR of falling antenna of the feed antennas that is coupled,This antenna structure mainly comprises distributing point 301, the first Branching Antenna 303, the second Branching Antenna 305 and the 3rd Branching Antenna 302, wherein the 3rd Branching Antenna 302 ground connection. The second Branching Antenna 305 is directly connected with distributing point 301, is not connected, and forms the gap of proper width with the first Branching Antenna 303. The first Branching Antenna 303 connects one end of the 3rd Branching Antenna by lumped capacitive elements 304, the other end of the 3rd Branching Antenna connects ground, thereby the metal part of covering copper region or board itself that is board mainboard with the earth of communication apparatus board is connected, preferably, the capacitance of lumped capacitive elements 304 is greater than 20pF. After isolation by lumped capacitive elements, antenna module is divided into three parts, the second Branching Antenna 305 of being directly connected with distributing point 301, with directly grounded the 3rd Branching Antenna 302 and first Branching Antenna 303 of keeping apart with board the earth, wherein, the first Branching Antenna 303 is as falling SAR inductive component, inductive component is provided with wiring point 0 near one end of the 3rd Branching Antenna 302, by cable line by wiring point 0 with fall SAR induction chip and connect together, thereby form complete SAR device and the two-in-one antenna structure of antenna module of falling.
Be illustrated in figure 4 the standing-wave ratio figure of this embodiment, data show, the present embodiment, in reaching the object of falling SAR, has guaranteed that antenna meets the requirement of communication frequency band, ensure antenna performance;
The two-in-one SAR of falling antenna structure disclosed by the invention can adopt pcb board+bubble silk floss, FPC+ plastic stent to realize, and also can adopt LDS process program
The two-in-one SAR of the falling antenna structure that the inductive component of the SAR of falling disclosed by the invention and antenna module unite two into one, by lumped capacitive elements, antenna cabling is isolated to one section and both retained primary antenna function, the Branching Antenna of the inductive component of SAR falls in conduct again, and is connected with the induction chip of plate end by cable. In actual use, find this antenna structure scheme, reducing production costs, reduce in the situation of space hold, and can reach well client's designing requirement.
It should be noted that; above-described enforcement is only to understand for the ease of those skilled in the art; be not limited to protection scope of the present invention; the present invention is applicable to the mobile device of different size; without departing from the inventive concept of the premise; the any apparent movement that those skilled in the art do the present invention, replacement and improvement etc. are all within protection scope of the present invention.
Claims (10)
1. the two-in-one SAR antenna structure that falls, comprises and it is characterized in that antenna module and fall SAR induction chip: described antenna module comprises and fall SAR induction and the first two-in-one Branching Antenna of aerial radiation, described the first Branching Antenna with fall SAR induction chip and be connected.
2. the two-in-one SAR antenna structure that falls according to claim 1, it is characterized in that: described antenna module also comprises distributing point and earth point, and the second Branching Antenna being connected with distributing point, the 3rd Branching Antenna that is connected with earth point, described the first Branching Antenna is isolated with distributing point and earth point respectively.
3. the two-in-one SAR antenna structure that falls according to claim 2, is characterized in that: described antenna is coupling feed antennas, and described the first Branching Antenna is not connected with the second Branching Antenna, and the first Branching Antenna and the 3rd Branching Antenna are isolated by isolating device.
4. the two-in-one SAR antenna structure that falls according to claim 3, is characterized in that: described isolating device is isolated the first Branching Antenna and the 3rd Branching Antenna in the position near earth point.
5. the two-in-one SAR antenna structure that falls according to claim 2, is characterized in that: described antenna is PIFA antenna, and described the first Branching Antenna is respectively by two isolating devices and the second Branching Antenna and the isolation of the 3rd Branching Antenna.
6. the two-in-one SAR antenna structure that falls according to claim 5, it is characterized in that: one of them of described two isolating devices isolated the first Branching Antenna and the second Branching Antenna in the position near distributing point, another isolating device is isolated the first Branching Antenna and the 3rd Branching Antenna in the position near earth point.
7. according to the two-in-one SAR antenna structure that falls described in claim 3 or 5, it is characterized in that: described isolating device is electric capacity.
8. the two-in-one SAR antenna structure that falls according to claim 7, is characterized in that: described electric capacity is the lumped capacitive elements that capacitance is more than or equal to 20pF.
9. the two-in-one SAR antenna structure that falls according to claim 1, is characterized in that: on described the first Branching Antenna, arrange and be connected in and fall SAR induction chip away from the wiring point of distributing point.
10. the two-in-one SAR antenna structure that falls according to claim 9, is characterized in that: described wiring point is arranged at the first Branching Antenna one end near earth point.
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CN201510988075.XA CN105591192A (en) | 2015-12-25 | 2015-12-25 | Two-in-one SAR reduction antenna structure |
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CN201510988075.XA CN105591192A (en) | 2015-12-25 | 2015-12-25 | Two-in-one SAR reduction antenna structure |
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Cited By (4)
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CN106602221A (en) * | 2016-12-13 | 2017-04-26 | 惠州硕贝德无线科技股份有限公司 | Novel LTE/WWAN antenna |
CN108847523A (en) * | 2018-06-06 | 2018-11-20 | 北京星网锐捷网络技术有限公司 | Planar inverted-F antenna |
US20220069451A1 (en) * | 2020-08-25 | 2022-03-03 | Nanjing Silergy Micro (HK) Co., Limited | Single antenna with a shared radiator |
CN114243271A (en) * | 2021-12-15 | 2022-03-25 | 深圳市锐尔觅移动通信有限公司 | Antenna device, circuit board assembly and electronic equipment |
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CN114243271A (en) * | 2021-12-15 | 2022-03-25 | 深圳市锐尔觅移动通信有限公司 | Antenna device, circuit board assembly and electronic equipment |
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Application publication date: 20160518 |