CN201540961U - Improvement structure of GPS multifrequency antenna - Google Patents
Improvement structure of GPS multifrequency antenna Download PDFInfo
- Publication number
- CN201540961U CN201540961U CN 200920271733 CN200920271733U CN201540961U CN 201540961 U CN201540961 U CN 201540961U CN 200920271733 CN200920271733 CN 200920271733 CN 200920271733 U CN200920271733 U CN 200920271733U CN 201540961 U CN201540961 U CN 201540961U
- Authority
- CN
- China
- Prior art keywords
- antenna
- antenna part
- substrate
- frequency
- grounding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000006872 improvement Effects 0.000 title abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 42
- 230000005855 radiation Effects 0.000 claims description 13
- 238000009825 accumulation Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000005404 monopole Effects 0.000 claims description 3
- 239000010408 film Substances 0.000 description 11
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000006698 induction Effects 0.000 description 9
- 230000004044 response Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000010292 electrical insulation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Landscapes
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
The utility model discloses an improvement structure of a GPS multifrequency antenna, which comprises a base plate, a grounding part, a first antenna part, a second antenna part, a third antenna part, a fourth antenna part, and a signal feed line, wherein the base plate is an insulator; the grounding part is fixedly arranged at one end of the base plate; the first antenna part is an inverted F-shaped metal film layer to be printed on the base plate and also an antenna radiating body of a low-frequency oscillator; the second antenna part is an inverted L-shaped metal film layer to be printed on the base plate, is positioned below the first antenna part and is also an antenna radiating body which is a main radiating area of the GPS; the third antenna part is an inverted L-shaped metal film layer to be printed on the base plate and is positioned below the second antenna part; the fourth antenna part is an inverted L-shaped metal film layer to be printed on the base plate, is positioned beside the first antenna part, and is a high-frequency resonant antenna radiating body; and the signal feed line is electrically connected with a feed point of the first antenna part to be used for transmitting a signal into a receiving circuit and a transmitting circuit.
Description
Technical Field
The present invention relates to an improved structure of a GPS multi-band antenna, and more particularly to an improved structure of a GPS multi-band antenna, which has a small size, a simple manufacturing process, and an easy assembly, and is suitable for various electronic devices and can achieve an optimal frequency response of coupling energy induction.
Background
With the rapid development of wireless communication, no matter whether a portable computer or a mobile phone has been developed from dual frequency to multi-frequency, and multi-frequency is designed to process various signals, such as network, bluetooth, GPS, etc., but all these signals are working at different bandwidths and require corresponding antennas to cooperate.
In the conventional antenna, an inverted-F dual-band antenna is used to receive signals of a first frequency and a second frequency, and the antenna is provided with a first planar conducting element and a second planar conducting element, and the frequency width, impedance matching and gain of the antenna are adjusted by the shapes of the first planar conducting element and the second planar conducting element; however, the area of the second planar conducting element often affects the gain of the antenna, and if an antenna with a higher bandwidth is required, the substrate area of the antenna must be increased, so that the conventional antenna is limited by the space between the embedded devices, and the substrate area cannot be effectively and sufficiently increased, which results in the inability to have a higher bandwidth; and when the area of the second plane conducting element is too large, the contact between the second plane conducting element and the first plane conducting element is easy to break.
In the conventional antenna, the frequency width, impedance matching and gain are adjusted by the shape and the spacing of the conductive elements, but the effect is quite unstable, and the distance between the conductive elements is easy to cause poor signal reception in design, so that the effect of multi-frequency cannot be achieved; and the prior art has the defects that the induction resonance capacity is easy to be insufficient, the voltage standing wave ratio is small, the circuit design is difficult to increase and the like when in use, and the manufacturing process is complicated, the manufacturing cost is overhigh, and the installation is difficult.
Therefore, in view of the defects of the conventional multi-frequency antenna, the inventor has developed the present invention by studying and improving the defects.
Disclosure of Invention
The main objective of the present invention is to provide an improved structure of a GPS multi-band antenna that can be used in various electronic devices and achieve the optimal frequency response of coupling energy sensing.
In order to achieve the above object, the utility model provides a GPS multifrequency antenna improvement structure, it includes: a substrate, which is an insulator; a grounding part fixed on one end of the substrate for improving the radiation efficiency of the antenna;
the first antenna part is an inverted F-shaped metal film layer printed on the substrate and is an antenna radiator of low-frequency vibration;
a second antenna part printed on the substrate in the shape of an inverted L-shaped metal film layer and located below the first antenna part, wherein the second antenna part is a main radiation area of the GPS as an antenna radiator;
a third antenna part printed on the substrate as an inverted-L-shaped metal film layer and disposed below the second antenna part and electrically connected to the grounding part to transmit the signal to the receiving and transmitting circuit, wherein one end of the third antenna part is extended with a connecting part having a stepped structure for connecting the first antenna part and the second antenna part, and the connecting part has a feed-in point;
a fourth antenna part printed on the substrate in an inverted-L shape, and located beside the first antenna part, and being an antenna radiator with high-frequency resonance; and the number of the first and second groups,
a signal feed-in line, which is a coaxial cable, the main signal line is electrically connected with the feed-in point of the first antenna part, and the grounding line of the signal feed-in line is electrically connected with the grounding part, and is used for transmitting the signal to the receiving and transmitting circuit.
In a preferred embodiment, the first antenna portion, the second antenna portion, the third antenna portion and the fourth antenna portion each have a branch section and a larger area end for forming a larger charge accumulation; and the branch section of the fourth antenna part is connected with the branch section of the first antenna part so as to balance the current of the first antenna part and the second antenna part.
In a preferred embodiment, a distance corresponding to an electrical insulation distance is formed between the end of the first antenna portion and the ground portion, between the end of the second antenna portion and the end of the first antenna portion, and between the end of the third antenna portion and the end of the second antenna portion.
In order to achieve the above object, the utility model also provides a GPS multifrequency antenna improvement structure, it includes:
a substrate, which is an insulator;
a grounding part which is a concave body, and two ends of the concave body are connected and welded on the substrate and are a metal aluminum foil;
a first antenna part printed on the substrate in an inverted-F shape, serving as a main radiation region of a monopole antenna with high-frequency resonance, for providing excitation frequency and energy source of the multi-frequency antenna, and having a branch section and a feed-in point;
the second antenna part is in a lengthened conjoined double-inverted-L shape, is printed on the substrate by a metal film layer, is positioned beside the first antenna part, and is provided with an extended branch section which is capacitively coupled with the branch section of the first antenna part, and the other branch section is electrically connected with the grounding part to form a low-frequency resonance loop;
a third antenna part, which is a connected reverse L shape, the metal film layer of which is printed on the substrate and is arranged below the second antenna part, and the third antenna part is provided with a branch section which extends and lengthens and is capacitively coupled with the second antenna part, and the other branch section is electrically connected with the grounding part to form a high-frequency resonance loop; and the number of the first and second groups,
a signal feed-in line, which is a coaxial cable, the main signal line is electrically connected with the feed-in point of the first antenna part, and the grounding line of the signal feed-in line is electrically connected with the grounding part, and is used for transmitting the signal to the receiving and transmitting circuit.
In a preferred embodiment, the first and second antenna portions form a corresponding distance of electrical isolation distance therebetween.
In a preferred embodiment, a branch of the third antenna portion is connected to a branch of the second antenna portion, so that the third antenna portion and the second antenna portion radiate a loop current to a ground portion.
Compared with the prior art, the beneficial effects of the utility model reside in that: the volume is small, the process is simple, the assembly is easy, the device is suitable for matching various electronic devices, and the coupling energy induction optimal frequency response can be achieved.
Drawings
Fig. 1A is a schematic plan view of a substrate according to the present invention;
fig. 1B is a schematic view of an embodiment of the present invention;
fig. 2A is a schematic plan view of another embodiment of the substrate of the present invention;
fig. 2B is a schematic diagram of the embodiment of fig. 2A according to the present invention.
Description of reference numerals: 1-a multi-frequency antenna; 10-a substrate; 11-a ground part; 12-a first antenna portion; 121-a branch section; 122-terminal end; 13-a second antenna portion; 131-a branch section; 132-terminal end; 14-a third antenna portion; 141-a branch section; 142-end; 143-a connecting portion; 144-a feed point; 15-a fourth antenna section; 151-branch section; 152-terminal end; 16-signal feed-in line; 161-ground line; 2-a multi-frequency antenna; 20-a substrate; 21-a ground part; 22-a first antenna portion; 221-branch section; 222-a feed point; 23-a second antenna portion; 231-a branch section; 232-a branch section; 24-a third antenna portion; 241-branch section; 242-a branch section; 25-signal feed-in line; 251-a ground line; A. b, C-corresponding spacing; d-corresponding spacing.
Detailed Description
In order to facilitate the understanding of the present invention and the efficacy achieved thereby, the present invention will now be described in detail with reference to the following illustrative embodiments:
referring to fig. 1A and 1B, the present invention provides an improved structure of a GPS multi-band antenna, which is denoted by reference numeral 1, and includes: a substrate 10, a grounding part 11, a first antenna part 12, a second antenna part 13, a third antenna part 14, a fourth antenna part 15 and a signal feed-in line 16 which are connected with each other; wherein,
the substrate 10 is an insulator; the grounding portion 11 is a metal aluminum foil fixed on one end of the substrate 10 and electrically connected to the signal feed-in line 16, so as to improve the radiation efficiency of the antenna.
The first antenna part 12 is formed by printing a metal film layer in an inverted-F shape on the substrate 10; the antenna radiator is an antenna radiator with low frequency vibration, and has a branch section 121 and a terminal 122 with a larger area, so as to form a larger charge accumulation, so as to facilitate the formation of capacitance effect, to enlarge the bandwidth range, and to form a corresponding distance A of electrical insulation distance between the terminal 122 of the first antenna part 12 and the grounding part 11, so as to achieve the coupling energy induction optimized frequency response, and to increase the characteristic impedance of the branch section 121, so as to increase the radiation efficiency.
The second antenna part 13 is formed by printing a metal film layer in an inverted-L shape on the substrate 10 and is located below the first antenna part 12; an antenna radiator is a main radiation area of the GPS, and has a branch section 131 and a larger end 132 for forming a larger charge accumulation for facilitating the formation of a capacitive effect to enlarge a bandwidth range, and the end 132 is a corresponding distance B of an electrical insulation distance from the end 122 of the first antenna part 12 to achieve a coupling energy induction optimized frequency response, thereby increasing the characteristic impedance of the branch section 121 of the first antenna part 12 to increase the radiation efficiency thereof.
The third antenna part 14 is formed by printing an inverted-L-shaped metal film layer on the substrate 10 and is located below the second antenna part 13; a branch section 141 and a larger area end 142, and the end 142 forms a corresponding distance C of electrical insulation distance with the end 132 of the second antenna portion 13 to achieve the coupling energy induction optimized frequency response, so as to increase the characteristic impedance of the branch section 131 of the second antenna portion 13 and increase the radiation efficiency; the end 142 of the third antenna portion 14 is electrically connected to the grounding portion 11 for transmitting the signal to the receiving and transmitting circuit.
The branch 141 of the third antenna portion 14 is extended with a connecting portion 143 having a step-like structure for connecting with the branch 121 of the first antenna portion 12 and the branch 131 of the second antenna portion 13, so as to connect with the ground portion 11 through the connecting portion 143 and the third antenna portion 14, thereby increasing more series inductance effect, and generating complementary effect with the capacitance at the corresponding distance A, B, C, so that the resonance effect is greatly improved, and the connecting portion 143 has a feeding point 144.
The fourth antenna part 15 is formed by printing an inverted-L-shaped metal film layer on the substrate 10 and is located beside the first antenna part 12; the antenna radiator is a high-frequency resonant antenna radiator, and has a branch segment 151 and a larger area end 152, and the branch segment 151 is connected to the branch segment 121 of the first antenna portion 12, so as to balance the currents of the first antenna portion 12 and the second antenna portion 13 and increase the inductance adjustment of the antenna.
The signal feed-in line 16 is a coaxial cable, the main signal line is electrically connected to the feed-in point 144 of the connecting portion 143, and the ground line 161 of the signal feed-in line 16 is electrically connected to the grounding portion 11 for transmitting the signal to the receiving and transmitting circuit.
The design is printed on the surface of the substrate 10 in the manufacturing process, so that the cost can be reduced, and the integration with a circuit is also convenient; the bent shape of each antenna part and the layout of the circuit thereof can not only reduce the volume of the antenna and the circuit, but also lead the circuit to approach the capacitance and increase the inductance; and the coupling energy induction optimal frequency response is achieved by the distance between the antenna parts, so that the receiving frequency and the signal intensity are maximized, and the effect of the multi-frequency antenna is better.
In addition, referring to fig. 2A and 2B, another possible structural embodiment of the multi-frequency antenna 2 is shown, which includes: a substrate 20, a grounding portion 21, a first antenna portion 22, a second antenna portion 23, a third antenna portion 24 and a signal feed-in line 25; wherein,
the substrate 20 is an insulator; the grounding portion 21 is a concave body, and two ends of the concave body are connected and welded on the substrate 20, and is a metal aluminum foil, one end of which is electrically connected with the second and third antenna portions 23, 24.
The first antenna part 22 is an inverted F-shaped metal film layer printed on the substrate 20, and is a main radiation area of a monopole antenna with high-frequency resonance, and is used for providing excitation frequency and energy source of the multi-frequency antenna; and the first antenna portion 22 has a branch section 221 and a feeding point 222.
The second antenna part 23 is a lengthened conjoined double-inverted-L shape, which is formed by printing a metal film layer on the substrate 20, is located beside the first antenna part 22, and has an extended branch section 231 which is capacitively coupled with the branch section 221 of the first antenna part 22, and the other branch section 232 is electrically connected with the grounding part 21, so as to form a low-frequency resonance loop; and a corresponding distance D of electrical insulation distance is formed between the first and second antenna portions 22, 23 to achieve the coupling energy induction optimized frequency response.
The third antenna portion 24 is a connected inverted-F shape, which is formed by printing a metal thin film layer on the substrate 20, is located below the second antenna portion 22, and has a branch 241 extending and lengthening to be capacitively coupled with the second antenna portion 22, the other branch 242 is electrically connected with the grounding portion 21 to form a high-frequency resonant loop, and the branch 242 of the third antenna portion 24 is connected with the branch 232 of the second antenna portion 23, so that the loop radiation current of the third antenna portion 24 and the second antenna portion 23 to the grounding portion 21 is caused.
The signal feed-in line 25 is a coaxial cable, and its main signal line is electrically connected to the feed-in point 222 of the first antenna portion 22, and the ground line 251 of the signal feed-in line 25 is electrically connected to the ground portion 21 for transmitting the signal to the receiving and transmitting circuit.
The structure design can also achieve the coupling energy induction optimized frequency response, so as to be beneficial to the receiving frequency and the signal intensity to be maximized, and the effect of the multi-frequency antenna is better.
The foregoing description is intended to be illustrative rather than limiting, and it will be understood by those skilled in the art that many modifications, variations, or equivalents may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (6)
1. An improved structure of a GPS multi-frequency antenna is characterized by comprising:
a substrate, which is an insulator;
a grounding part which is fixedly arranged at one end of the substrate and is used for improving the radiation efficiency of the antenna;
the first antenna part is an inverted F-shaped metal film layer printed on the substrate and is an antenna radiator of low-frequency vibration;
a second antenna part printed with an inverted-L-shaped metal film layer on the substrate and located below the first antenna part, wherein the second antenna part is a main radiation area of the GPS as an antenna radiator;
a third antenna part printed on the substrate as an inverted-L-shaped metal film layer and disposed below the second antenna part and electrically connected to the grounding part to transmit the signal to the receiving and transmitting circuit, wherein one end of the third antenna part extends to form a connecting part with a stepped structure for connecting the first antenna part and the second antenna part, and the connecting part has a feed-in point;
a fourth antenna part printed with an inverted-L-shaped metal film layer on the substrate and located beside the first antenna part, which is a high-frequency resonant antenna radiator; and the number of the first and second groups,
a signal feed-in line, which is a coaxial cable, the main signal line is electrically connected with the feed-in point of the first antenna part, and the grounding line of the signal feed-in line is electrically connected with the grounding part, and is used for transmitting the signal to the receiving and transmitting circuit.
2. The improved structure of GPS multifrequency antenna of claim 1, wherein said first antenna portion, said second antenna portion, said third antenna portion, and said fourth antenna portion each have a branch section and a larger area end for a larger charge accumulation; and the branch section of the fourth antenna part is connected with the branch section of the first antenna part so as to balance the current of the first antenna part and the second antenna part.
3. The improved structure of GPS multifrequency antenna of claim 2, wherein a corresponding distance of electrical isolation distance is formed between the end of the first antenna portion and the ground, between the end of the second antenna portion and the end of the first antenna portion, and between the end of the third antenna portion and the end of the second antenna portion.
4. An improved structure of a GPS multi-frequency antenna is characterized by comprising:
a substrate, which is an insulator;
a grounding part which is a concave body, and two ends of the concave body are connected and welded on the substrate and are a metal aluminum foil;
a first antenna part printed on the substrate in an inverted-F shape, serving as a main radiation region of a monopole antenna with high-frequency resonance, for providing excitation frequency and energy source of the multi-frequency antenna, and having a branch section and a feed-in point;
the second antenna part is in a lengthened conjoined double-inverted-L shape, is printed on the substrate by a metal film layer, is positioned beside the first antenna part, and is provided with an extended branch section which is capacitively coupled with the branch section of the first antenna part, and the other branch section is electrically connected with the grounding part to form a low-frequency resonance loop;
a third antenna part, which is a connected reverse L shape, the metal film layer of which is printed on the substrate and is arranged below the second antenna part, and the third antenna part is provided with a branch section which extends and lengthens and is capacitively coupled with the second antenna part, and the other branch section is electrically connected with the grounding part to form a high-frequency resonance loop; and the number of the first and second groups,
a signal feed-in line, which is a coaxial cable, the main signal line is electrically connected with the feed-in point of the first antenna part, and the grounding line of the signal feed-in line is electrically connected with the grounding part, and is used for transmitting the signal to the receiving and transmitting circuit.
5. The improved structure of GPS multi-frequency antenna as claimed in claim 4, wherein the first and second antenna portions are spaced apart by a distance corresponding to an electrical isolation distance.
6. The improved structure of GPS multifrequency antenna as defined in claim 5, wherein the branch segment of one of said third antenna portions is connected to the branch segment of said second antenna portion, so that the loop of said third and second antenna portions radiates current to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920271733 CN201540961U (en) | 2009-11-18 | 2009-11-18 | Improvement structure of GPS multifrequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920271733 CN201540961U (en) | 2009-11-18 | 2009-11-18 | Improvement structure of GPS multifrequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540961U true CN201540961U (en) | 2010-08-04 |
Family
ID=42592417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920271733 Expired - Lifetime CN201540961U (en) | 2009-11-18 | 2009-11-18 | Improvement structure of GPS multifrequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201540961U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856639A (en) * | 2012-09-04 | 2013-01-02 | 中兴通讯股份有限公司 | Antenna of cell phone, and processing method and device for antenna to receive signals |
| CN110474150A (en) * | 2019-09-04 | 2019-11-19 | 常熟市泓博通讯技术股份有限公司 | Antenna without clearance zone |
| CN112164872A (en) * | 2020-08-31 | 2021-01-01 | 西安朗普达通信科技有限公司 | 5G multifrequency antenna |
-
2009
- 2009-11-18 CN CN 200920271733 patent/CN201540961U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856639A (en) * | 2012-09-04 | 2013-01-02 | 中兴通讯股份有限公司 | Antenna of cell phone, and processing method and device for antenna to receive signals |
| CN110474150A (en) * | 2019-09-04 | 2019-11-19 | 常熟市泓博通讯技术股份有限公司 | Antenna without clearance zone |
| CN110474150B (en) * | 2019-09-04 | 2021-06-25 | 常熟市泓博通讯技术股份有限公司 | Antenna without clearance area |
| CN112164872A (en) * | 2020-08-31 | 2021-01-01 | 西安朗普达通信科技有限公司 | 5G multifrequency antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101106211B (en) | Dual loop multi-frequency antenna | |
| CN105633581B (en) | Multi-frequency antenna and wireless communication device with same | |
| US7136025B2 (en) | Dual-band antenna with low profile | |
| US20100060528A1 (en) | Dual-frequency antenna | |
| US7050009B2 (en) | Internal antenna | |
| US7969371B2 (en) | Small monopole antenna having loop element included feeder | |
| WO2013007165A1 (en) | Mimo antenna structure of multi-frequency band mobile phone | |
| JP2007510362A (en) | Multiband flat plate inverted F antenna including floating non-excitation element and wireless terminal incorporating the same | |
| KR20120138758A (en) | Antennas with novel current distribution and radiation patterns, for enhanced antenna isolation | |
| TWI268009B (en) | Dual band antenna and method for making the same | |
| CN102544726A (en) | Multi-frequency antenna module | |
| TWI446626B (en) | Wideband antenna for mobile communication | |
| TW202215712A (en) | Antenna system | |
| CN201167131Y (en) | Double-frequency coupling antennae | |
| US20100039328A1 (en) | Annular antenna | |
| CN201540961U (en) | Improvement structure of GPS multifrequency antenna | |
| US20080094303A1 (en) | Planer inverted-F antenna device | |
| US9160573B1 (en) | Transmission line load antenna module | |
| CN212648490U (en) | Dual-band antenna and IOT equipment | |
| CN201540960U (en) | Multi-band antenna | |
| CN202817178U (en) | Dual-frequency monopole antenna and its mobile terminal | |
| CN100399625C (en) | Hidden type antenna | |
| US20040125033A1 (en) | Dual-band antenna having high horizontal sensitivity | |
| JP2007531452A (en) | Multi-band antenna with separately supplied whip (WHIP) function in wireless communication terminals | |
| US11677149B2 (en) | Multi-band antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |