CN104577313A - Novel coupled feed antenna aiming at clearance-free rear metal shell - Google Patents
Novel coupled feed antenna aiming at clearance-free rear metal shell Download PDFInfo
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- CN104577313A CN104577313A CN201510071532.9A CN201510071532A CN104577313A CN 104577313 A CN104577313 A CN 104577313A CN 201510071532 A CN201510071532 A CN 201510071532A CN 104577313 A CN104577313 A CN 104577313A
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Abstract
The invention provides a novel coupled feed antenna aiming at a clearance-free rear metal shell. The novel coupled feed antenna comprises a PCB and an antenna main body arranged on the PCB, wherein the antenna main body is provided with a feed point, a first feed branch and a second feed branch; a first intercoupling branch is coupled with the first feed branch and the second feed branch; a second intercoupling branch is coupled with the first intercoupling branch, wherein the first intercoupling branch and the second intercoupling branch are arranged at the part close to the edge of the PCB. By the coupled feed and the reasonable parasitic element configuration for the antenna, the bandwidth of the antenna is widened greatly, and the design difficulty of the antenna on the whole rear metal shell is solved effectively. Simulation and actual measurement show that the bandwidth of the antenna is relatively wide, the efficiency is relatively good, and the performances of the antenna at both the high-frequency section and the low-frequency section of mobile communication can well meet the requirement for mobile communication equipment.
Description
Technical field
The present invention relates to a kind of antenna, particularly a kind of for the novel couple feed antenna without headroom metal back cover.
Background technology
Along with the continuous progress of society and developing rapidly of science and technology, mobile communication equipment become people handle official business life a requisite part, and the current mobile communication equipment with metal-like is generally subject to the favor of users, the mobile communication equipment of metal shell has become a kind of main product.Therefore, all-metal back cover machine becomes one of main R&D direction of each mobile communication equipment manufacturer, but the metal back cover of mobile communication equipment causes the deterioration of antenna system environment and the decline of antenna performance.
Existing metal back cover mobile communication equipment needs on back cover, open a seam (as HTC One), to ensure the radiance of antenna, but this design, destroy consistency of outward appearance, be not all-metal back cover truly.We further investigate for all-metal back cover, find traditional antenna as PIFA, MONOPOLE, LOOP in such a case performance all can not meet the demands: Monopole antenna needs certain antenna headroom, the design of this obvious inapplicable all-metal back cover; The PIFA beamwidth of antenna can only cover 2G and 3G frequency range, the band requirement of LTE cannot be reached, although Loop antenna broader bandwidth, but area occupied is excessive, in the design of all-metal back cover handset structure, aerial radiation, facing to mobile phone front, can only utilize the space of display screen and boundary frame area, although therefore Loop antenna performance still can, the space taken has exceeded the structural requirement of mobile phone.In sum, all there is the radiance both cannot taking into account antenna in existing antenna structure, does not destroy again the consistency of metal back cover outward appearance, or there is the larger problem that takes up room.
Summary of the invention
The object of the present invention is to provide a kind of for the novel couple feed antenna without headroom metal back cover, poor with the antenna radiation performance of the mobile communication equipment solving existing metal back cover, take up room comparatively large or affect the conforming problem of metal back cover entirety.
For achieving the above object, the invention provides a kind of for the novel couple feed antenna without headroom metal back cover, comprise pcb board and be located at the antenna body on pcb board, described antenna body comprises a feed structure, described feed structure is provided with feedback point, described feed structure is divided into the first feed branch and the second feed branch by described feedback point, described antenna body also comprises the first parasitic couplings branch and the second parasitic couplings branch, first parasitic couplings branch and described first feed branch, described second feed branch coupling, second parasitic couplings branch is coupled with described first feed branch,
Wherein, described first parasitic couplings branch and the second parasitic couplings branch are located at the marginal position place near pcb board.
Preferably, described first parasitic couplings branch comprises a long shoot joint and brachyplast joint, and described long shoot joint is coupled with described first feed branch, and described brachyplast joint is coupled with described second feed branch.
Preferably, the long shoot joint of the first parasitic couplings branch is coupled with described first feed branch, and coupling space is between the two below 3mm.
Preferably, the spacing that the brachyplast of described first parasitic couplings branch is saved between described second feed branch is below 3mm.
Preferably, the end be positioned near described long shoot joint side of described second parasitic couplings branch is coupled with the end that described long shoot is saved.
Preferably, described first parasitic couplings branch is connected with described pcb board respectively with one end of the second parasitic couplings branch.
Preferably, the position of described feedback point can carry out moving adjustment as required.
The invention provides a kind of for the novel couple feed antenna without headroom metal back cover, this antenna carries out signal feeding by arranging feedback o'clock between two feed branch, simultaneously to being provided with Liang Ge parasitic couplings branch by two feed branch, be coupled with two feed branch respectively, after coupling, aerial signal be convenient to radiate from pcb board.This antenna is configured by couple feed and rational parasitic element, has greatly widened the beamwidth of antenna, effectively solves the Antenna Design difficult problem on all-metal back cover.Emulation and actual measurement show, this antenna ensure that good bandwidth and the radiance of antenna low-and high-frequency, and it meets the demand of mobile communication equipment in mobile communication frequency range better performances.
Accompanying drawing explanation
Fig. 1 is the antenna assembly assembling schematic diagram of the preferred embodiment of the present invention;
Fig. 2 is the antenna structure front schematic view of the preferred embodiment of the present invention;
Fig. 3 is the antenna structure schematic rear view of the preferred embodiment of the present invention;
Fig. 4 is the antenna performance S11 simulation result figure of the preferred embodiment of the present invention;
Fig. 5 is the antenna performance S11 measured result figure of the preferred embodiment of the present invention;
Fig. 6 is the antenna efficiency simulation result figure of the preferred embodiment of the present invention;
Fig. 7 is the antenna efficiency measured result figure of the preferred embodiment of the present invention.
Label declaration: 100-PCB plate; 200-antenna body; 201-presents point; 202-first feed branch; 203-second feed branch; 204-first parasitic couplings branch; 205-second parasitic couplings branch.
Embodiment
For better the present invention being described, hereby with a preferred embodiment, and accompanying drawing is coordinated to elaborate to the present invention, specific as follows:
As shown in Figure 1, the present embodiment provide for the novel couple feed antenna without headroom metal back cover, comprise pcb board 100 and be located at the antenna body 200 on pcb board.As shown in Figure 2, antenna body 200 comprises a feed structure, feed structure is provided with feedback point 201, feed structure is divided into the first feed branch 202 and the second feed branch 203 by feedback point 201, wherein, first feed branch 202 is coupled with the second parasitic couplings branch 205, and the first feed branch 202 is coupled with the first parasitic couplings branch 204, and the second feed branch 203 is coupled with the first parasitic couplings branch 204.Second parasitic couplings branch 205 and the first parasitic couplings branch 204 are located at the marginal position place near pcb board 100.
As shown in Figure 3, the second parasitic couplings branch 205 is coupled with the first feed branch 202; First parasitic couplings branch 204 comprises a long shoot joint and brachyplast joint, and long shoot joint is coupled with the first feed branch 202, and brachyplast joint is coupled with the second feed branch 203.Preferably, the intercoupling of the end that saves of the end of the second parasitic couplings branch 205 and the long shoot of the first parasitic couplings branch 204; The long shoot joint of the first parasitic couplings branch 204 is coupled with the first feed branch 202, and coupling space is between the two below 3mm.Spacing between the brachyplast joint of the first parasitic couplings branch 204 and the second feed branch 203 is below 3mm.
In addition, in the present embodiment, the second parasitic couplings branch 205 is connected with pcb board 100 with one end of the first parasitic couplings branch 204, achieves the ground connection of the second parasitic couplings branch 205 and the first parasitic couplings branch 204.The position of feedback point 201 can carry out moving adjustment as required.
During this Antenna Operation, be coupled out low-frequency resonant between the first parasitic couplings branch 204 and the first feed branch 202, the length of the long shoot joint of the first parasitic couplings branch 204 determines the position of low-frequency resonant.Be coupled out first high-frequency resonant between second parasitic couplings branch 205 and the first feed branch 202, the outer length of the second parasitic couplings branch 205 determines the position of the first high-frequency resonant.The intercoupling of end that the end of the second parasitic couplings branch 205 and the long shoot of the first parasitic couplings branch 204 are saved contributes to the radiance of enhancing first high-frequency resonant.The brachyplast joint of the first parasitic couplings branch 204 is coupled out the second high-frequency resonant with the second feed branch 203, and the outer length of the brachyplast joint of the first parasitic couplings branch 204 determines the position of the second high-frequency resonant.
In addition, the first feed branch 202 intrinsic produces third high resonance frequently, and the outer length of the first feed branch 202 has certain influence to third high frequency resonance location.The size of the relative area between the brachyplast joint of the first parasitic couplings branch 204 and the second feed branch 203 has certain influence to the position of third high frequency resonance and the degree of depth.This antenna structure, by utilizing Liang Ge parasitic couplings branch, adds radiance and the bandwidth of antenna, makes this kind of antenna meet the demand of mobile communication equipment in mobile communication frequency range better performances.
As shown in Figure 4, for the S parameter of the present embodiment measures simulation result figure, can find out: at sampling point 1 place, when signal frequency is 880MHz, S11 is-5.08dB; Sampling point 2 place, when signal frequency is 960MHz, S11 is-7.5249dB; Sampling point 3 place, when signal frequency is 1710MHz, S11 is-8.312dB; Sampling point 4 place, when signal frequency is 2700MHz, S11 is-13.018dB.As shown in Figure 5, the measured result figure that the S parameter for the present embodiment is measured, can find out: at sampling point 1 place, when signal frequency is 880MHz, S11 is-5.1378dB; Sampling point 2 place, when signal frequency is 960MHz, S11 is-4.2239dB; Sampling point 3 place, when signal frequency is 1710MHz, S11 is-7.6843dB; Sampling point 4 place, when signal frequency is 2170MHz, S11 is-7.0307dB; The value of sampling point 5 ~ 8 is see accompanying drawing.Can be found out by above two accompanying drawings, simulation result and the measured result degree of fitting of the S parameter of the antenna that the present embodiment provides are very good.
As shown in Figure 6, be the antenna efficiency simulation result figure of the present embodiment; As shown in Figure 7, be the antenna efficiency actual measured results figure of the present embodiment.Wherein, can find out in Fig. 7, the efficiency of this antenna when low-frequency range (880MHz ~ 960MHz) reaches more than 40%, and this is under the environment without headroom all-metal back cover, and other antenna scheme such as PIFA, MONOPOLE, LOOP etc. are unapproachable; And the efficiency of this antenna when high band (1710MHz-2700MHz) also reaches more than 40%, measured result shows that this antenna performance in very wide frequency band is also very good.
Certainly; the present invention is not limited with above-described embodiment; two feed branch of antenna, the shape of Liang Ge parasitic couplings branch and relative position can adjust according to actual needs; when not departing from inventive concept; the distortion that those skilled in the art do this antenna and accommodation, all should be included within protection scope of the present invention.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those skilled in the art is in the technical scope that the present invention discloses; the distortion do the present invention or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (7)
1. one kind for the novel couple feed antenna without headroom metal back cover, it is characterized in that, comprise pcb board and be located at the antenna body on pcb board, described antenna body comprises a feed structure, described feed structure is provided with feedback point, described feed structure is divided into the first feed branch and the second feed branch by described feedback point, described antenna body also comprises the first parasitic couplings branch and the second parasitic couplings branch, first parasitic couplings branch is coupled with described first feed branch, described second feed branch, and the second parasitic couplings branch is coupled with described first feed branch;
Wherein, described first parasitic couplings branch and the second parasitic couplings branch are located at the marginal position place near pcb board.
2. according to claim 1 for the novel couple feed antenna without headroom metal back cover, it is characterized in that, described first parasitic couplings branch comprises a long shoot joint and brachyplast joint, described long shoot joint is coupled with described first feed branch, and described brachyplast joint is coupled with described second feed branch.
3. according to claim 2ly it is characterized in that for the novel couple feed antenna without headroom metal back cover, the long shoot joint of the first parasitic couplings branch is coupled with described first feed branch, and coupling space is between the two below 3mm.
4. according to claim 2ly it is characterized in that for the novel couple feed antenna without headroom metal back cover, the brachyplast joint of described first parasitic couplings branch is below 3mm with the spacing between described second feed branch.
5. according to claim 2ly it is characterized in that for the novel couple feed antenna without headroom metal back cover, the end be positioned near described long shoot joint side of described second parasitic couplings branch is coupled with the end that described long shoot is saved.
6. according to claim 1 and 2ly it is characterized in that for the novel couple feed antenna without headroom metal back cover, described first parasitic couplings branch is connected with described pcb board respectively with one end of the second parasitic couplings branch.
7. according to claim 1 and 2ly it is characterized in that for the novel couple feed antenna without headroom metal back cover, the position of described feedback point can carry out moving adjustment as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071532.9A CN104577313A (en) | 2015-02-11 | 2015-02-11 | Novel coupled feed antenna aiming at clearance-free rear metal shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071532.9A CN104577313A (en) | 2015-02-11 | 2015-02-11 | Novel coupled feed antenna aiming at clearance-free rear metal shell |
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| CN104577313A true CN104577313A (en) | 2015-04-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140626A (en) * | 2015-10-16 | 2015-12-09 | 深圳市信维通信股份有限公司 | Antenna structure based on complete metal shell |
| CN105811074A (en) * | 2016-01-27 | 2016-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Antenna system and mobile terminal |
| CN106450787A (en) * | 2015-08-11 | 2017-02-22 | 广东格林精密部件股份有限公司 | Design method for mobile equipment antenna taking totally-enclosed metal frame as reflector |
| CN107039762A (en) * | 2017-05-04 | 2017-08-11 | 禾邦电子(苏州)有限公司 | One kind miniaturization full frequency band high-gain PCB antenna |
-
2015
- 2015-02-11 CN CN201510071532.9A patent/CN104577313A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450787A (en) * | 2015-08-11 | 2017-02-22 | 广东格林精密部件股份有限公司 | Design method for mobile equipment antenna taking totally-enclosed metal frame as reflector |
| CN105140626A (en) * | 2015-10-16 | 2015-12-09 | 深圳市信维通信股份有限公司 | Antenna structure based on complete metal shell |
| CN105811074A (en) * | 2016-01-27 | 2016-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Antenna system and mobile terminal |
| CN107039762A (en) * | 2017-05-04 | 2017-08-11 | 禾邦电子(苏州)有限公司 | One kind miniaturization full frequency band high-gain PCB antenna |
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Application publication date: 20150429 |