CN103022648B - Low-profile mobile terminal antenna - Google Patents
Low-profile mobile terminal antenna Download PDFInfo
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- CN103022648B CN103022648B CN201210572892.3A CN201210572892A CN103022648B CN 103022648 B CN103022648 B CN 103022648B CN 201210572892 A CN201210572892 A CN 201210572892A CN 103022648 B CN103022648 B CN 103022648B
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Abstract
The invention relates to a built-in antenna of a mobile terminal, in particular to a low-profile mobile terminal antenna. The low-profile mobile terminal antenna comprises a PCB (printed circuit board) and an antenna body arranged above the PCB, wherein the antenna body comprises a first antenna body and a second antenna body, the first antenna body comprises a feed branch, a first long branch, a second short branch, a third long branch and a first ground branch, the feed branch and the first ground branch are respectively connected with the PCB, the second antenna body comprises a second ground branch and a fourth branch, and the second ground branch is connected with the fourth branch and the PCB. Compared with the prior art, the low-profile mobile terminal antenna is wide in resonance bandwidth, in particular high-frequency bandwidth, and is obvious high in radiant efficiency.
Description
Technical field
The present invention relates to a kind of built-in aerial of mobile terminal, particularly the low profile mobile terminal antenna of one.
Background technology
Antenna is a kind of device utilizing frequency characteristic to receive and transmit.In recent years, for design and the performance of the mobile terminal antenna of radio communication, the developing direction of mobile communication is more and more affected.The leading indicator of Antenna Design comprises: have suitable multifrequency resonance; Antenna realize signal propagate and energy emission all based on the resonance of certain frequency.If antenna can resonance in multiple frequency, so antenna can at multiple frequency operation.On the other hand, the design of mobile terminal is more and more highly integrated, and the space causing antenna to take is more and more less.For antenna, an important size is the height of antenna, because mobile terminal, such as mobile phone has the designer trends trending towards " thin ", and the height that antenna can be utilized is restricted; Another important size is antenna " headroom ", so-called headroom, refer to and pcb board removes metal ground part, antenna entity will be positioned over above headroom district as much as possible, so just can reach good radiance, namely our good global radiation efficiency of usually saying.But because the original paper integrated level of system is very high, also very large headroom district can not be reserved to antenna.The space that antenna can take is more and more less, also will keep the performance of antenna, and this is difficulty and the challenge place of future antenna design.And the resonant bandwidth of existing antenna is general narrower, and global radiation efficiency is lower.
Summary of the invention
The object of the invention is to provide a kind of low profile mobile terminal antenna, general narrower with the resonant bandwidth solving antenna of the prior art, and the technical matters that global radiation efficiency is lower.
The object of the invention is achieved through the following technical solutions:
A kind of low profile mobile terminal antenna, comprise pcb board and be arranged at the antenna body above it, described antenna body comprises the first antenna body and the second antenna body, described first antenna body comprise connect successively feed branch, the first long branch, the second short branch, the 3rd long branch and the first ground connection branch, described feed branch is connected with described pcb board respectively with described first ground connection branch, described second antenna body comprises the second ground connection branch and the 4th branch, and described second ground connection branch is connected with described 4th branch and described pcb board respectively.
Preferably, the described 4th branches into " U " type branch, and one end of described " U " type branch is connected with described second ground connection branch, and the other end is near described feed branch.
Preferably, the peak of described antenna body and the vertical range of described pcb board are 2mm-3mm.
Preferably, described first antenna body also comprises quintafurcation and the 6th branch, and described quintafurcation is connected with described feed branch, and described 6th branch is connected with described 3rd long branch.
Preferably, the described 6th " L " type branch is branched into.
Preferably, described antenna body also comprises third antenna body, described third antenna body comprise connect successively the 7th branch, the 8th branch and the 9th branch, described 7th branch is connected with described pcb board.
Preferably, the subregion of described pcb board one end is cut, leaves rectangular area, and the long limit of described rectangular area is 15mm-20mm, and broadside is 5mm-10mm, and described antenna body is arranged on the top of this end pcb board.
Preferably, described antenna body and three-dimension curved surface antenna holder conformal.
Compared with prior art, the present invention has following beneficial effect:
1, the resonant bandwidth of low profile mobile terminal antenna of the present invention is wider, and especially high frequency bandwidth is wider, and global radiation efficiency is significantly improved;
2, the height of low profile mobile terminal antenna of the present invention is less, can meet the designing requirement that mobile terminal " thin " is changed;
3, the structure of low profile mobile terminal antenna of the present invention is simple, easily realizes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of low profile mobile terminal antenna of the present invention;
Fig. 2 is the structural representation of the second embodiment of low profile mobile terminal antenna of the present invention;
Fig. 3 is the structural representation of the third embodiment of low profile mobile terminal antenna of the present invention;
Fig. 4 is the structural representation of the pcb board of low profile mobile terminal antenna of the present invention;
Fig. 5 is the return loss plot of existing antenna;
Fig. 6 is the return loss plot of the first embodiment of low profile mobile terminal antenna of the present invention;
Fig. 7 is the comparison diagram of the global radiation efficiency of low profile mobile terminal antenna of the present invention and existing antenna.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention in detail.
Referring to Fig. 1, is the first embodiment of low profile mobile terminal antenna of the present invention, and the antenna body comprising pcb board 101 and be arranged at above it, antenna body comprises the first antenna body and the second antenna body.First antenna body comprise connect successively feed branch 207, first short branch 204 of long branch 203, second, the 3rd long branch 205 and the first ground connection branch 206, feed branch 207, first short branch 204 of long branch 203, second, the 3rd long branch 205 and the first ground connection branch 206 form a coil antenna body, and feed branch 207 is connected with pcb board 101 respectively with the first ground connection branch 206.Second antenna body comprises the second ground connection branch 201 and the 4th ground connection branch 201 of branch 202, second is connected with the 4th branch 202 and pcb board 101 respectively, forms radiation arm.
In this example, the 4th branch 202 is " U " type branch, and one end of " U " type branch is connected with the second ground connection branch 201, and the other end is near feed branch 207.
In the present invention, the peak of antenna body and the vertical range of pcb board are 2mm-3mm, and the height of antenna is less, can meet the designing requirement that mobile terminal " thin " is changed.
Referring to Fig. 2, is the second embodiment of the present invention.In this embodiment, the first antenna body also comprises quintafurcation 208 and the 6th branch 209, the quintafurcation 208 is connected with feed branch 207, and the 6th branch 209 is connected with the 3rd long branch 205.In this example, the 6th branch 209 is " L " type branch.This embodiment can regulate the impedance of high-frequency resonant.
Referring to Fig. 3, is the third embodiment of the present invention.In this embodiment, antenna body also comprises third antenna body, and third antenna body comprises the 7th branch 508, the 8th branch 509 and the 9th branch 508 of branch the 510, seven that connect successively and is connected with pcb board, forms radiation arm.This embodiment can regulate the impedance of low-frequency resonant.
Refer to Fig. 4, the subregion of pcb board one end of the present invention is cut, leaves rectangular area 4, and the long limit 401 of rectangular area 4 is 15mm-20mm, broadside 402 is 5mm-10mm, and the first above-mentioned antenna body, the second antenna body and third antenna body are arranged on the top of this end pcb board.
In the present invention, antenna body can be conformal with three-dimension curved surface antenna holder.
Refer to Fig. 5, Fig. 6, wherein, the return loss plot of the existing antenna of Fig. 5, Fig. 6 is the return loss plot of the first embodiment of low profile mobile terminal antenna of the present invention.Contrasted by Fig. 5 and Fig. 6, can find out that the resonant bandwidth of low profile mobile terminal antenna of the present invention is wider than existing antenna, especially high frequency bandwidth is significantly increased.Accordingly, refer to Fig. 7, the global radiation efficiency of low profile mobile terminal antenna of the present invention has obvious lifting than existing antenna.And the structure of low profile mobile terminal antenna of the present invention is simple, easily realizes.
Be only several specific embodiments of the application above, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drops in the protection range of the application.
Claims (7)
1. a low profile mobile terminal antenna, comprise pcb board and be arranged at the antenna body above it, it is characterized in that, described antenna body comprises the first antenna body and the second antenna body, described first antenna body comprises the feed branch connected successively, first long branch, second short branch, 3rd long branch and the first ground connection branch, described feed branch is connected with described pcb board respectively with described first ground connection branch, described second antenna body comprises the second ground connection branch and the 4th branch, described second ground connection branch is connected with described 4th branch and described pcb board respectively, described 4th branches into " U " type branch, and one end of described " U " type branch is connected with described second ground connection branch, and the other end is near described feed branch.
2. low profile mobile terminal antenna as claimed in claim 1, is characterized in that, the peak of described antenna body and the vertical range of described pcb board are 2mm-3mm.
3. low profile mobile terminal antenna as claimed in claim 1, is characterized in that, described first antenna body also comprises quintafurcation and the 6th branch, and described quintafurcation is connected with described feed branch, and described 6th branch is connected with described 3rd long branch.
4. low profile mobile terminal antenna as claimed in claim 3, is characterized in that, the described 6th branches into " L " type branch.
5. low profile mobile terminal antenna as claimed in claim 1, it is characterized in that, described antenna body also comprises third antenna body, described third antenna body comprise connect successively the 7th branch, the 8th branch and the 9th branch, described 7th branch is connected with described pcb board.
6. low profile mobile terminal antenna as claimed in claim 1, is characterized in that, the subregion of described pcb board one end is cut, leave rectangular area, the long limit of described rectangular area is 15mm-20mm, and broadside is 5mm-10mm, and described antenna body is arranged on the top of this end pcb board.
7., as the low profile mobile terminal antenna in claim 1-6 as described in any one, it is characterized in that, described antenna body and three-dimension curved surface antenna holder conformal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572892.3A CN103022648B (en) | 2012-12-25 | 2012-12-25 | Low-profile mobile terminal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572892.3A CN103022648B (en) | 2012-12-25 | 2012-12-25 | Low-profile mobile terminal antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103022648A CN103022648A (en) | 2013-04-03 |
| CN103022648B true CN103022648B (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210572892.3A Expired - Fee Related CN103022648B (en) | 2012-12-25 | 2012-12-25 | Low-profile mobile terminal antenna |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346397B (en) * | 2013-06-21 | 2016-01-13 | 上海安费诺永亿通讯电子有限公司 | Be applicable to the frequency antenna system with metal frame architecture mobile terminal |
| CN103441328B (en) * | 2013-09-02 | 2016-02-24 | 信维创科通信技术（北京）有限公司 | Little clearance antenna and the portable set with it |
| CN103531888A (en) * | 2013-10-09 | 2014-01-22 | 信维创科通信技术（北京）有限公司 | Multi-frequency noncentral feed type annular antenna for handheld equipment and handheld equipment |
| CN104412450A (en) * | 2014-04-28 | 2015-03-11 | 华为终端有限公司 | Antenna and mobile terminal |
| CN104218329A (en) * | 2014-09-05 | 2014-12-17 | 昆山联滔电子有限公司 | Combined antenna |
| CN107093788B (en) * | 2017-03-17 | 2020-07-14 | 江苏省东方世纪网络信息有限公司 | Low profile antenna |
| CN113644445B (en) * | 2020-04-27 | 2022-10-11 | 华为技术有限公司 | Electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986965Y (en) * | 2006-09-15 | 2007-12-05 | 广达电脑股份有限公司 | Built-in multi-frequency antenna of mobile communication device and mobile communication device |
| CN101640307A (en) * | 2008-07-30 | 2010-02-03 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna and wireless communication device with same |
| CN202474197U (en) * | 2012-03-09 | 2012-10-03 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency antenna |
-
2012
- 2012-12-25 CN CN201210572892.3A patent/CN103022648B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986965Y (en) * | 2006-09-15 | 2007-12-05 | 广达电脑股份有限公司 | Built-in multi-frequency antenna of mobile communication device and mobile communication device |
| CN101640307A (en) * | 2008-07-30 | 2010-02-03 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna and wireless communication device with same |
| CN202474197U (en) * | 2012-03-09 | 2012-10-03 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency antenna |
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| CN103022648A (en) | 2013-04-03 |
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Granted publication date: 20150114 Termination date: 20181225 |