CN104332699A - Broadband coupled loop antenna - Google Patents
Broadband coupled loop antenna Download PDFInfo
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- CN104332699A CN104332699A CN201410671692.2A CN201410671692A CN104332699A CN 104332699 A CN104332699 A CN 104332699A CN 201410671692 A CN201410671692 A CN 201410671692A CN 104332699 A CN104332699 A CN 104332699A
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- branch
- feed
- coupling unit
- antenna
- mainboard
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Abstract
The invention provides a broadband coupled loop antenna. The broadband coupled loop antenna comprises a mainboard and an antenna part; the antenna part is connected with the mainboard for grounding; the antenna part comprises a feed part, a first radiation part and a second radiation part; one end of the feed part is connected with a feed source, while the other end of the feed part is connected with a first branch and a second branch; one end of the first radiation part is opposite to the first branch and coupled with the first branch, while the other end of the first radiation part is connected with the mainboard for grounding; the feed part, the first branch and the first radiation part are combined to form a first loop antenna; one end of the second radiation part is opposite to the second branch and coupled with the second branch, while the other end of the second radiation part is connected with the mainboard for grounding; the feed part, the second branch and the second radiation part are combined to form a second loop antenna. The broadband coupled loop antenna comprises two loop antennas, each loop antenna is equally divided into two parts which are electrically coupled with each other, and therefore, the working bandwidth of the antenna is expanded to meet a plurality of wireless communication standards, and meanwhile, the transmission efficiency of the antenna is relatively high.
Description
Technical field
The present invention relates to antenna design techniques field, particularly relate to a kind of broadband couple device loop antenna.
Background technology
Along with the fast development of radio communication, its to the speed of transfer of data and the requirement of quality more and more higher.At present, radio communication has multiple technologies and standard.Radio communication again to 3.9G evolution, is the process developed from the speech business of movement to high-speed data service from 2G to 3G.Wherein, LTE(Long Term Evolution, Long Term Evolution) as the major technique of future generation of field of wireless, the transmission quality of transmission rate and Geng Gao faster can be provided.In order to provide abundanter radio communication function, present mobile phone needs the antenna that can meet the various wireless communication standard comprising LTE.In order to meet these wireless communication standards, mobile communication antenna needs to cover the working frequency range such as GSM/UMTS/CDMA/TD-SCDMA/CDMA200/LTE.
Loop aerial is a kind of antenna often used in communication apparatus, traditional loop aerial is an entirety, one end feed, one end ground connection carry out work, but traditional loop aerial bandwidth of operation is narrower, cannot cover the working frequency range such as GSM/UMTS/CDMA/TD-SCDMA/CDMA200/LTE.
Summary of the invention
In order to solve the problem, the invention provides a kind of broadband couple device loop antenna, comprising mainboard and antenna part, described antenna part is connected with described mainboard and is grounded; Wherein, described antenna part comprises:
Feed part, one end connects feed, and the other end is connected with the first branch and the second branch;
First radiant section, is coupled with being formed between described first branch, and described first radiant section is connected with described mainboard and is grounded, described feed part, the first branch and the first radiant section composition first ring antenna;
Second radiant section, is coupled with being formed between described second branch, and described second radiant section is connected with described mainboard and is grounded, and described feed part, the second branch and the second radiant section form the second loop antenna.
Preferably, described current feed department divides and comprises the first feed part and the second feed part, one end of described second feed part connects feed by described first feed part, the other end of described second feed part connects the first branch and the second branch, and described first branch and described second branch extend respectively to the both sides of described second feed part.
Preferably, described first radiant section comprises the first coupling unit and the first grounded part, and described first coupling unit entirety is U-shaped; Described first coupling unit while relative with described first branch and formed and be coupled, the end of the another side of described first coupling unit is connected with described mainboard by described first grounded part.
Preferably, described first coupling unit surrounds described first branch.
Preferably, described second radiant section comprises the second coupling unit and the second grounded part, described second coupling unit entirety is in L-type, the lateral part of described second coupling unit is relative with described second branch and form coupling, described second coupling unit be vertically positioned at side away from described feed part and extended to described mainboard side, the vertical part of described second coupling unit is connected with described mainboard by described second grounded part.
Preferably, described second branch is L-type, the vertical part of described second branch is connected with described feed portions end, and the lateral part of described second branch is positioned at the below of described feed portions end, and the lateral part of described second branch is relative with described first radiant section and form coupling.
Preferably, described first feed part and the junction of described second feed part are provided with and mate minor matters towards described first ring antenna side.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
A kind of broadband couple device loop antenna provided by the invention, includes two loop aerials, and each loop aerial is divided into two parts, all by being electrically coupled to one piece between two parts, from the bandwidth of operation widening antenna, can meet various wireless communication standard, the efficiency of transmission of antenna is higher simultaneously.
Accompanying drawing explanation
By reference to the accompanying drawings, by hereafter state detailed description, more clearly can understand above-mentioned and other feature and advantage of the present invention, wherein:
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is inventive antenna partial elevational stereogram;
Fig. 3 is inventive antenna partial rear stereogram;
Fig. 4 is the return loss plot of broadband couple device loop antenna provided by the invention;
Fig. 5 is the efficiency chart of broadband couple device loop antenna provided by the invention.
Symbol description:
100-mainboard
200-antenna part
300-feed
201-first feed part
202-second feed part
203-first branch
204-second branch
205-first coupling unit
206-first grounded part
207-second coupling unit
208-second grounded part
209-mates minor matters.
Embodiment
See the accompanying drawing that the embodiment of the present invention is shown, hereafter in more detail the present invention will be described.But the present invention can realize in many different forms, and should not be construed as by the restriction in the embodiment of this proposition.On the contrary, it is abundant and complete open in order to reach for proposing these embodiments, and makes those skilled in the art understand scope of the present invention completely.In these accompanying drawings, for clarity sake, may be exaggerated size and the relative size in layer and region.
With reference to figure 1-3, the invention provides a kind of broadband couple device loop antenna, in electronics, the equipment such as such as mobile phone, it mainly includes mainboard 100, antenna part 200 and feed 300, and antenna part 200 is all connected with feed 300 with mainboard 100.
Antenna part 200 comprises feed part, the first branch of branch 203, second 204, first radiant section and the second radiant section, one end of feed part connects feed 300 and receives feed signal, first branch 204 of branch 203, second is all connected on the other end of feed part, and the first radiant section and the second radiant section are all connected with mainboard 100 and are grounded, feed part, the first branch 203 and the first radiant section form the first loop aerial, and feed part, the second branch 204 and the second radiant section form the second loop aerial.
Concrete, current feed department divides and comprises the first feed part 201 and the second feed part 202, one end of first feed part 201 connects feed 300, wherein feed 300 is positioned at the edge of mainboard 100, one end of second feed part 202 connects the other end of the first feed part 201, and makes the second feed part 202 be positioned at headroom district above mainboard 100; The other end of the second feed part 202 is connected with the first branch 203 and the second branch 204, and the first branch 203 and the second branch 204 extended respectively to the arranged on left and right sides of the second feed part 202, as shown in figures 2-3.
Wherein, first radiant section comprises the first coupling unit 205 and the first grounded part 206, first coupling unit 205 is overall U-shaped, first coupling unit 205 while relative with the first branch 203, and forming electric coupling between the first coupling unit 205 and the first branch 203, the coupling distance wherein between the first coupling unit 205 and the first branch 203 can adjust according to concrete communication need; The end of the first coupling unit 205 another side is connected on mainboard 100 by the first grounded part 206, thus is grounded.Preferably, as shown in figures 2-3, first coupling unit 205 while parallel with the first branch 203, first branch 203 is between the both sides of the first coupling unit 205, this setup makes all to produce between the first branch 203 and the both sides of the first coupling unit 205 to be coupled, thus is conducive to the bandwidth of operation increasing low-frequency resonant; Certainly, the position relationship of the first branch 203 and the first coupling unit 205 does not limit to shown in Fig. 2-3, and the first branch 203 also can be positioned at the outside of the first coupling unit 205, can adjust as the case may be, not be restricted herein.
In the present embodiment, first feed part 201 connects feed 300 and is connected successively with the first branch 203 with the second feed part 202, electric coupling between first branch 203 and the first coupling unit 205, first coupling unit 205 connects mainboard 100 by the first grounded part 206 again and carries out ground connection, thus making the first feed part 201 → the second feed part 202 → the first branch 203 → the first coupling unit 205 → the first grounded part 206 form the first loop aerial, the first annular dwi hastasana becomes low-frequency resonant and high-frequency resonant; First loop aerial provided by the invention is divided into two parts, and the mode by electric coupling between these two parts realizes Signal transmissions, thus low frequency frequency range is 700MHz ~ 960MHz, the frequent section of high frequency is the job requirement of 2.75 ~ 3GHz to make the present invention to meet, and loop aerial of the prior art is generally in integral form, its beamwidth of antenna is narrower, cannot reach the bandwidth that the present invention can realize, especially in low-frequency range, loop aerial of the prior art is difficult to reach 700MHz.
In the present embodiment, first feed part 201 is also provided with the junction of the second feed part 202 mates minor matters 209, the bearing of trend of coupling minor matters 209 is consistent with the bearing of trend of the first branch 203, the length of coupling minor matters 209 can regulate according to concrete communication need, and coupling minor matters 209 are for regulating high-frequency resonant.
In the present embodiment, the second branch 204 entirety is in L-type, and the upper end of the vertical portion of the second branch 204 is connected with the end of the second feed part 202, and the lateral part of the second branch 204 is positioned at the below of the second feed part 202 end; Second radiant section comprises the second coupling unit 207 and the second grounded part 208, second coupling unit 207 entirety is roughly in L-type, the lateral part of the second coupling unit 207 is positioned at the top of the second branch 204 lateral part and forms electric coupling in contrast, and the coupling distance between the second coupling unit 207 and the second branch 204 can adjust according to concrete communication need; On one end away from the second feed part 202, the lateral part that the vertical part of the second coupling unit 207 is connected to the second coupling unit 207, and the vertical part of the second coupling unit 207 extends to mainboard 100 side, the end of the vertical part of the second coupling unit 207 is connected on mainboard 100 by the second grounded part 208, is grounded.In the present embodiment, first feed part 201 connects feed 300 and is connected successively with the second branch 204 with the second feed part 202, electric coupling between second branch 204 and the second coupling unit 207, second coupling unit 207 connects mainboard 100 by the second grounded part 208 again, thus make the first feed part 201 → the second feed part 202 → the second branch 204 → the second coupling unit 207 → the second grounded part 208 form the second loop aerial, second loop aerial forms intermediate frequency resonance, and the intermediate-frequency band that the second loop aerial covers is 1.17GHz ~ 2.69GHz.
With reference to Fig. 4, be the return loss plot of broadband couple device loop antenna provided by the invention, as can be seen from Figure, the present invention meets low-frequency range 700MHz ~ 960MHz, Mid Frequency 1.17GHz ~ 2.69GHz, and the job requirement of high band 2.75 ~ 3GHz; With reference to Fig. 5, be the efficiency chart of broadband couple device loop antenna provided by the invention, can find out by figure, antenna provided by the invention is better in the efficiency of low-frequency range and Mid Frequency.A kind of broadband couple device loop antenna provided by the invention, include two loop aerials, and each loop aerial is divided into two parts, all by being electrically coupled to one piece between two parts, inventive antenna is made to create multiple resonance point, thus the broadening bandwidth of operation of antenna, can realize various wireless communication standard, the efficiency of transmission of antenna is higher simultaneously.
In sum, the invention provides a kind of broadband couple device loop antenna, comprise mainboard and antenna part, antenna part is connected with mainboard and is grounded, and antenna part comprises feed part, the first radiant section and the second radiant section; Feed part one end connects feed, and the other end is connected with the first branch and the second branch; First radiant section one end is relative with the first branch and form coupling, and the other end is connected with mainboard and is grounded, feed part, the first branch and the first radiant section composition first ring antenna; Second radiant section one end is relative with the second branch and form coupling, and the other end is connected with mainboard and is grounded, and feed part, the second branch and the second radiant section form the second loop antenna.The present invention includes two loop aerials, each loop aerial is divided into two parts, between two parts all by being electrically coupled to one piece, thus the broadening bandwidth of operation of antenna, can meet various wireless communication standard, the efficiency of transmission of antenna is higher simultaneously.
Those skilled in the art should be understood that the present invention can realize with other concrete forms many and not depart from the spirit or scope of the present invention.Although describe embodiments of the invention, the present invention should be understood and should not be restricted to these embodiments, within the spirit and scope of the invention that those skilled in the art can define as appended claims, make change and amendment.
Claims (7)
1. a broadband couple device loop antenna, is characterized in that, comprises mainboard and antenna part, and described antenna part is connected with described mainboard and is grounded; Wherein, described antenna part comprises:
Feed part, one end connects feed, and the other end is connected with the first branch and the second branch;
First radiant section, is coupled with being formed between described first branch, and described first radiant section is connected with described mainboard and is grounded, described feed part, the first branch and the first radiant section composition first ring antenna;
Second radiant section, is coupled with being formed between described second branch, and described second radiant section is connected with described mainboard and is grounded, and described feed part, the second branch and the second radiant section form the second loop antenna.
2. according to broadband couple device loop antenna according to claim 1, it is characterized in that, described current feed department divides and comprises the first feed part and the second feed part, one end of described second feed part connects feed by described first feed part, the other end of described second feed part connects the first branch and the second branch, and described first branch and described second branch extend respectively to the both sides of described second feed part.
3. according to broadband couple device loop antenna according to claim 2, it is characterized in that, described first radiant section comprises the first coupling unit and the first grounded part, and described first coupling unit entirety is U-shaped; Described first coupling unit while relative with described first branch and formed and be coupled, the end of the another side of described first coupling unit is connected with described mainboard by described first grounded part.
4. according to broadband couple device loop antenna according to claim 3, it is characterized in that, described first coupling unit surrounds described first branch.
5. according to broadband couple device loop antenna according to claim 2, it is characterized in that, described second radiant section comprises the second coupling unit and the second grounded part, described second coupling unit entirety is in L-type, the lateral part of described second coupling unit is relative with described second branch and form coupling, described second coupling unit be vertically positioned at side away from described feed part and extended to described mainboard side, the vertical part of described second coupling unit is connected with described mainboard by described second grounded part.
6. according to broadband couple device loop antenna according to claim 5, it is characterized in that, described second branch is L-type, the vertical part of described second branch is connected with described feed portions end, the lateral part of described second branch is positioned at the below of described feed portions end, and the lateral part of described second branch is relative with described first radiant section and form coupling.
7. according to broadband couple device loop antenna according to claim 2, it is characterized in that, described first feed part and the junction of described second feed part are provided with mates minor matters towards described first ring antenna side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671692.2A CN104332699A (en) | 2014-11-21 | 2014-11-21 | Broadband coupled loop antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671692.2A CN104332699A (en) | 2014-11-21 | 2014-11-21 | Broadband coupled loop antenna |
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| Publication Number | Publication Date |
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| CN104332699A true CN104332699A (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410671692.2A Pending CN104332699A (en) | 2014-11-21 | 2014-11-21 | Broadband coupled loop antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655707A (en) * | 2016-01-07 | 2016-06-08 | 惠州Tcl移动通信有限公司 | Antenna structure and mobile terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669182A (en) * | 2002-09-10 | 2005-09-14 | 弗拉克托斯股份有限公司 | Coupled multi-band antenna |
| CN102117966A (en) * | 2011-03-17 | 2011-07-06 | 华为终端有限公司 | Printed antenna |
| CN103682578A (en) * | 2012-09-10 | 2014-03-26 | 联想(北京)有限公司 | Antenna device and antenna forming method |
| CN204189946U (en) * | 2014-11-21 | 2015-03-04 | 上海安费诺永亿通讯电子有限公司 | A kind of broadband couple device loop antenna |
-
2014
- 2014-11-21 CN CN201410671692.2A patent/CN104332699A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669182A (en) * | 2002-09-10 | 2005-09-14 | 弗拉克托斯股份有限公司 | Coupled multi-band antenna |
| CN102117966A (en) * | 2011-03-17 | 2011-07-06 | 华为终端有限公司 | Printed antenna |
| CN103682578A (en) * | 2012-09-10 | 2014-03-26 | 联想(北京)有限公司 | Antenna device and antenna forming method |
| CN204189946U (en) * | 2014-11-21 | 2015-03-04 | 上海安费诺永亿通讯电子有限公司 | A kind of broadband couple device loop antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655707A (en) * | 2016-01-07 | 2016-06-08 | 惠州Tcl移动通信有限公司 | Antenna structure and mobile terminal |
| CN105655707B (en) * | 2016-01-07 | 2019-05-03 | 惠州Tcl移动通信有限公司 | Antenna structure and mobile terminal |
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Application publication date: 20150204 |