CN204857945U - Double polarization base station antenna based on coupling feed structure - Google Patents
Double polarization base station antenna based on coupling feed structure Download PDFInfo
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- CN204857945U CN204857945U CN201520407174.XU CN201520407174U CN204857945U CN 204857945 U CN204857945 U CN 204857945U CN 201520407174 U CN201520407174 U CN 201520407174U CN 204857945 U CN204857945 U CN 204857945U
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Abstract
The utility model discloses a double polarization base station antenna based on coupling feed structure, including the medium base plate, medium base plate lower surface sets up radiating element and feed unit, separate on radiating element and the feed unit physics, have the clearance, medium base plate upper surface sets up the feeder, medium base plate below sets up the reflecting plate. The combination current that utilizes different ports four radiating element of when excitation is + 45 respectively and realizes base station antenna's double polarization characteristic with the principle of - 45 directions, wherein on feed structure and the radiating element physics separately, adjust the resonance point that radiating element can remove the antenna, impedance match then can be adjusted in the clearance between regulation feed structure and feed structure and the radiating element.
Description
Technical field
The utility model relates to field of antenna, particularly a kind of Bipolarization antenna for base station based on couple feed structure.
Background technology
In mobile communication system, antenna for base station plays important role, and antenna for base station is the signal of telecommunication in communication system and the transducer between the electromagnetic wave in space, and the quality of its performance will have influence on the communication quality of whole mobile communication system; Environment residing for antenna for base station reality is very complicated, and electromagnetic wave propagation under this complex environment can exist multipath fading problem, and the interference signal that antenna for base station is received is comparatively large, adopts Bipolarization antenna for base station to overcome multipath fading so normal.
Along with the fast development of mobile communication technology, mobile communication system of today is that 2G/3G/4G many standards coexist, this just requires that antenna for base station can cover wider frequency band, antenna for base station is normally that prototype change comes with symmetrical dipole, the frequency band of symmetrical dipole is narrower, in passband, only have a resonance frequency, the frequency band that very difficult realization is wider, usually need the feed structure of change antenna and energisation mode to obtain wider frequency band.
Utility model content
There is shortcoming with not enough to overcome prior art, the utility model provides a kind of Bipolarization antenna for base station based on couple feed structure.
The utility model adopts following technical scheme:
A kind of Bipolarization antenna for base station based on couple feed structure, comprise medium substrate, described medium substrate lower surface arranges radiating element and feed element, described radiating element and feed element physically separate, there is gap, described medium substrate upper surface arranges feeder line, arranges reflecting plate below described medium substrate.
Described radiating element comprises first, second, third and the 4th radiation minor matters, and adjacent radiation minor matters are mutually vertical;
Described feed element comprises first, second, third and the 4th feed minor matters, is separately positioned on the centre position of adjacent radiation minor matters;
Described radiating element and feed element are all about medium substrate Central Symmetry.
Described first radiation minor matters are vertical with the 3rd and the 4th radiation minor matters respectively, described second radiation minor matters are vertical with the 3rd and the 4th radiation minor matters respectively, described first feed minor matters are between the first, the 4th radiation minor matters, described second feed minor matters are between second and third radiation minor matters, described 3rd feed minor matters are between the first, the 3rd radiation minor matters, and described 4th feed minor matters are between the second, the 4th radiation minor matters;
Also comprise coaxial feeder, described coaxial feeder comprises first, second coaxial feeder, described feeder line comprises first and second feeder line, the bottom of first, second coaxial feeder described is all connected with the signal source through reflecting plate, the outer conductor on described first coaxial feeder top is connected with the 3rd feed minor matters, its inner wire is connected with the first feeder line through medium substrate, and then is connected with the 4th feed minor matters through medium substrate, forms+45 ° of polarization excitations;
The outer conductor on described second coaxial feeder top is connected with the second feed minor matters, and its inner wire is connected with the second feeder line through medium substrate, and then is connected with the first feed minor matters through medium substrate, forms-45 ° of polarization excitations.
Also comprise two short circuit metallic posts, be respectively first, second short circuit metallic post, and form Ba Lun with first, second coaxial feeder.
The quarter-wave of frequency centered by the distance of described medium substrate and reflecting plate.
Also comprise flange, be arranged on the edge, surrounding of reflecting plate.
Described first, second, third and the 4th the structure of radiation minor matters all identical, described radiation minor matters are snakelike, notch cuttype or rectangle;
Described first, second, third and the 4th the structure of feed minor matters all identical, be snakelike, notch cuttype or loop configuration.
Described first, second, third and the 4th radiation minor matters length be less than quarter-wave.
Described four feed minor matters are the coupling path of notch cuttype, extended feeding minor matters and four radiation minor matters.
The beneficial effects of the utility model:
(1) achieved feed structure and the independent controlled wideband dual polarized base station antenna of radiating element of antenna by novel couple feed structure, antenna has two resonance points, can improve the bandwidth of antenna;
(2) medium substrate is adopted to have simplicity of design, the advantages such as cost is lower;
(3) Bipolarization antenna for base station that the utility model proposes takes up room less, realizes multifrequency Bipolarization antenna for base station than being easier on one piece of medium substrate, can meet actual multimode communication requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the partial structurtes schematic diagram of Fig. 1;
Fig. 3 is the couple feed principle schematic that the utility model embodiment 1 realizes+45 ° of polarization;
Fig. 4 is the couple feed principle schematic that the utility model embodiment 1 realizes-45 ° of polarization;
Fig. 5 is the S parameter simulation curve that the utility model embodiment 1 is operated in 660MHz-980MHz frequency range;
Fig. 6 is the voltage standing wave ratio VSWR simulation curve that the utility model embodiment 1 is operated in 660MHz-980MHz frequency range;
Fig. 7 is the half power lobe width simulation curve that the utility model embodiment 1 is operated in 660MHz-960MHz frequency range;
Fig. 8 is the gain simulation curve that the utility model embodiment 1 is operated in 660MHz-960MHz frequency range;
Fig. 9 is the structural representation of the utility model embodiment 2;
Figure 10 is the structural representation of the utility model embodiment 3;
Figure 11 is the structural representation of the utility model embodiment 4.
Shown in figure:
1-first radiation minor matters, 2-second radiation minor matters, 3-the 3rd radiation minor matters, 4-the 4th radiation minor matters, 5-first feed minor matters, 6-second feed minor matters, 7-the 3rd feed minor matters, 8-the 4th feed minor matters, 9-medium substrate, 10-reflecting plate, 11-flange, 12-first coaxial feeder, 13-second coaxial feeder, 14-first short circuit metallic post, 15-second short circuit metallic post, 16-first via hole, 17-second via hole, 18-first feeder line, 19-second feeder line.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1
As Fig. 1, shown in Fig. 2, based on a Bipolarization antenna for base station for couple feed structure, comprise medium substrate 9 and coaxial feeder, below described medium substrate 9, reflecting plate 10 is set, reflecting plate 10 surrounding is along arranging flange 11, the material of reflecting plate 10 and flange 11 can be copper, aluminium, silver grade for metal material, be positioned at radiating element and the feed element of medium substrate lower surface, be positioned at the feeder line of medium substrate upper surface, wherein, first, second, 3rd and the 4th radiation minor matters 1, 2, 3, 4 form radiating element, first, second, 3rd and the 4th feed minor matters 5, 6, 7, the feed element of 8 formation Bipolarization antenna for base station, described first, second, in 3rd and the 4th radiating element, adjacent radiation unit is mutually vertical, and described first, second, 3rd and the 4th feed minor matters are separately positioned on the centre position of adjacent radiation minor matters, and it is equal with the distance of adjacent radiation minor matters, feed element and radiating element separate physically, there is certain interval, by this gap coupling excitation radiating element, the gap controlled between feed element and radiating element just can well realize impedance matching, and first, second, the feed minor matters size of the 3rd and the 4th is compared to first, second, 3rd and the 4th radiation minor matters are much smaller, would not take too large space like this.
Described coaxial feeder comprises first and second coaxial feeder 12,13, all employing characteristic impedance is the coaxial line of 50 Ω, the bottom of described first coaxial feeder 12 is connected with the signal source through reflecting plate, the outer conductor of its tip portion is connected with the 3rd feed minor matters 7, inner wire is connected with the second feeder line 19 through medium substrate, and then be connected with the 4th feed minor matters 8 through medium substrate through the second via hole 17, complete+45 ° of polarization excitations;
Equally, the bottom part of the second coaxial feeder 13 is connected with through reflecting plate 10 signal source, the outer conductor of the tip portion of the second coaxial feeder 13 is connected with the second feed minor matters 6, inner wire is then connected with the first feeder line 18 through medium substrate 9, be connected with the first feed minor matters 5 through medium substrate through the first via hole 16 again, complete-45 ° of polarization excitations;
Also comprise two short circuit metallic posts, be respectively first, second short circuit metallic post 14,15, and coaxial feeder 12,13 together form Ba Lun, can electric current on equilibrium radiation unit and the isolation improved between port.
Radiation minor matters in the present embodiment are rectangle, and feed minor matters are notch cuttype, and the distance between adjacent feed minor matters is in 0.3mm-0.5mm, and the length of radiation minor matters is less than quarter-wave, and feed minor matters are less than 1/8th wavelength.
When utilizing different port to encourage, the resultant current of four radiating elements is respectively the principle in+45 ° and-45 ° of directions to realize the dual polarization characteristic of antenna for base station, wherein feed structure and radiating element physically separate, regulate radiating element can the resonance point of portable antenna, regulate feed structure and the gap between feed structure and radiating element then can regulate impedance matching.
Fig. 3 is the couple feed principle that the utility model first embodiment Bipolarization antenna for base station realizes+45 ° of polarization: the 3rd and the 4th feed minor matters 7,8 when adding excitation, in figure, arrow represents the sense of current of each unit, according to coupling principle: the sense of current in the first radiation minor matters 1 is contrary with the horizontal component of the 3rd feed minor matters 7, the horizontal component sense of current of the first feed minor matters 5 is contrary with the first radiation minor matters 1 again; The sense of current in 3rd radiation minor matters 3 is contrary with the vertical component of the 3rd feed minor matters 7, and the vertical component sense of current of the second feed minor matters 6 is contrary with the 3rd radiation minor matters 3 again; The sense of current in 4th radiation minor matters 4 is contrary with the vertical component of the 4th feed minor matters 8, and the vertical component sense of current of the first feed minor matters 5 is contrary with the 4th radiation minor matters 4 again; The sense of current in second radiation minor matters 2 is contrary with the horizontal component of the 4th feed minor matters 8, and the horizontal component sense of current of the second feed minor matters 6 is contrary with the second radiation minor matters 2 again.Current phase on the radiating element of wherein feed element and the same length just right with feed element is contrary, so the electromagnetic field produced in far field can be offset, the electric current compound direction of 4 remaining radiation minor matters is just in time+45 ° of directions, just constitutes+45 ° of polarization antenna for base station.
In like manner, Fig. 4 is the couple feed principle that Bipolarization antenna for base station realizes-45 ° of polarization: first, second feed minor matters 5,6 when adding excitation, in figure, arrow represents the sense of current of each unit, according to coupling principle: the sense of current in the second radiation minor matters 2 is contrary with the horizontal component of the second feed minor matters 6, the horizontal component sense of current of the 4th feed minor matters 8 is contrary with the second radiation minor matters 2 again; The sense of current in 3rd radiation minor matters 3 is contrary with the vertical component of the second feed minor matters 6, and the vertical component sense of current of the 3rd feed minor matters 7 is contrary with the 3rd radiation minor matters 3 again; The sense of current in 4th radiation minor matters 4 is contrary with the vertical component of the first feed minor matters 5, and the vertical component sense of current of the 4th feed minor matters 8 is contrary with the 4th radiation minor matters 4 again; The sense of current in first radiation minor matters 1 is contrary with the horizontal component of the first feed minor matters 5, and the horizontal component sense of current of the 3rd feed minor matters 7 is contrary with the first radiation minor matters 1 again.Current phase on the radiating element of wherein feed structure and the same length just right with feed structure is contrary, so the electromagnetic field produced in far field can be offset, the electric current compound direction of 4 remaining radiation minor matters is just in time-45 ° of directions, just constitutes-45 ° of polarization antenna for base station.
Fig. 5 is return loss and the isolation simulation curve that the first embodiment is operated in 660MHz-980MHz frequency range, S11 is the return loss of input port 1, S22 is the return loss of input port 2, S21 is the transmission coefficient of two input ports, there are two resonance frequencies in antenna: high-frequency resonant point is controlled by radiating element, low-frequency resonant point is controlled by feed structure and coupling gap, and antenna achieves good coupling; Fig. 6 is the voltage standing wave ratio simulation curve of the first embodiment in 660MHz-980MHz frequency range, and VSWR1 represents the voltage standing wave ratio of input port 1, and VSWR2 represents the voltage standing wave ratio of input port 2, and the standing-wave ratio of two input ports is all less than 1.5; Fig. 7 is the half power lobe width simulation curve of the first embodiment in 660MHz-960MHz frequency range, wherein Port1 represents the horizontal plane half power lobe width of input port 1, Port2 represents the horizontal plane half power lobe width of input port 2, in whole band limits, half power lobe width is all at 65 ° ± 5 °; Fig. 8 is the gain simulation curve of the first embodiment in 660MHz-960MHz frequency range, and wherein Port1 represents that the gain that input port 1 encourages, Port2 represent the gain that input port 2 encourages, and in whole frequency range, the gain of antenna is all at more than 8dBi.
Embodiment 2
As shown in Figure 9, first, second, third and the 4th feed minor matters be loop configuration, all the other are with embodiment 1.
Embodiment 3
As shown in Figure 10, first, second, third and the 4th radiation minor matters and feed minor matters be serpentine configuration, the dimension scale of wherein radiation minor matters is less.
Embodiment 4
As shown in figure 11, the main feature of the Bipolarization antenna for base station of the present embodiment has: described four radiation minor matters 1,2,3,4 is ladder-type structure, extends four feed minor matters 5,6,7,8 and four radiation minor matters 1,2,3, the coupling path of 4, thus make feed minor matters 5,6,7,8 and radiation minor matters 1,2, the length of 3,4 reduces, and all the other are with the first embodiment.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (9)
1. the Bipolarization antenna for base station based on couple feed structure, it is characterized in that, comprise medium substrate, described medium substrate lower surface arranges radiating element and feed element, described radiating element and feed element physically separate, have gap, described medium substrate upper surface arranges feeder line, arranges reflecting plate below described medium substrate.
2. antenna according to claim 1, is characterized in that, described radiating element comprises first, second, third and the 4th radiation minor matters, and adjacent radiation minor matters are mutually vertical;
Described feed element comprises first, second, third and the 4th feed minor matters, is separately positioned on the centre position of adjacent radiation minor matters;
Described radiating element and feed element are all about medium substrate Central Symmetry.
3. antenna according to claim 2, it is characterized in that, described first radiation minor matters are vertical with the 3rd and the 4th radiation minor matters respectively, described second radiation minor matters are vertical with the 3rd and the 4th radiation minor matters respectively, described first feed minor matters are between the first, the 4th radiation minor matters, described second feed minor matters are between second and third radiation minor matters, described 3rd feed minor matters are between the first, the 3rd radiation minor matters, and described 4th feed minor matters are between the second, the 4th radiation minor matters;
Also comprise coaxial feeder, described coaxial feeder comprises first, second coaxial feeder, described feeder line comprises first and second feeder line, the bottom of first, second coaxial feeder described is all connected with the signal source through reflecting plate, the outer conductor on described first coaxial feeder top is connected with the 3rd feed minor matters, its inner wire is connected with the first feeder line through medium substrate, and then is connected with the 4th feed minor matters through medium substrate, forms+45 ° of polarization excitations;
The outer conductor on described second coaxial feeder top is connected with the second feed minor matters, and its inner wire is connected with the second feeder line through medium substrate, and then is connected with the first feed minor matters through medium substrate, forms-45 ° of polarization excitations.
4. antenna according to claim 2, is characterized in that, also comprises two short circuit metallic posts, is respectively first, second short circuit metallic post, and forms Ba Lun with first, second coaxial feeder.
5. antenna according to claim 1, is characterized in that, the quarter-wave of frequency centered by the distance of described medium substrate and reflecting plate.
6. antenna according to claim 1, is characterized in that, also comprises flange, is arranged on the edge, surrounding of reflecting plate.
7. antenna according to claim 2, is characterized in that, described first, second, third and the 4th the structure of radiation minor matters all identical, described radiation minor matters are snakelike, notch cuttype or rectangle;
Described first, second, third and the 4th the structure of feed minor matters all identical, be snakelike, notch cuttype or loop configuration.
8. antenna according to claim 2, is characterized in that, described first, second, third and the 4th radiation minor matters length be less than quarter-wave.
9. antenna for base station according to claim 7, is characterized in that, described four feed minor matters are the coupling path of notch cuttype, extended feeding minor matters and four radiation minor matters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407174.XU CN204857945U (en) | 2015-06-12 | 2015-06-12 | Double polarization base station antenna based on coupling feed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407174.XU CN204857945U (en) | 2015-06-12 | 2015-06-12 | Double polarization base station antenna based on coupling feed structure |
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| CN204857945U true CN204857945U (en) | 2015-12-09 |
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| CN201520407174.XU Expired - Fee Related CN204857945U (en) | 2015-06-12 | 2015-06-12 | Double polarization base station antenna based on coupling feed structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104916910A (en) * | 2015-06-12 | 2015-09-16 | 华南理工大学 | Dual-polarized base station antenna based on coupled feeding structure |
| WO2017097164A1 (en) * | 2015-12-10 | 2017-06-15 | 上海贝尔股份有限公司 | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| CN107046166A (en) * | 2016-08-31 | 2017-08-15 | 武汉虹信通信技术有限责任公司 | A kind of low section base station antenna radiation unit and antenna |
| CN107317100A (en) * | 2017-05-18 | 2017-11-03 | 广州杰赛科技股份有限公司 | A kind of dual polarization antenna radiation unit and antenna assembly |
| CN107369895A (en) * | 2017-06-26 | 2017-11-21 | 西安电子科技大学 | One kind orientation high-gain microstrip antenna |
| CN107394387A (en) * | 2017-09-11 | 2017-11-24 | 成都德杉科技有限公司 | A kind of wideband dual polarized microstrip antenna based on magnetic coupling feed structure |
| CN108123219A (en) * | 2017-12-19 | 2018-06-05 | 广东曼克维通信科技有限公司 | Wide bandwidth base station antenna and base station system |
| US10998631B2 (en) | 2018-02-13 | 2021-05-04 | Sercomm Corporation | Antenna system |
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2015
- 2015-06-12 CN CN201520407174.XU patent/CN204857945U/en not_active Expired - Fee Related
Cited By (13)
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| CN104916910A (en) * | 2015-06-12 | 2015-09-16 | 华南理工大学 | Dual-polarized base station antenna based on coupled feeding structure |
| EP3389138A4 (en) * | 2015-12-10 | 2019-07-31 | Nokia Shanghai Bell Co., Ltd. | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| WO2017097164A1 (en) * | 2015-12-10 | 2017-06-15 | 上海贝尔股份有限公司 | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| CN106876885A (en) * | 2015-12-10 | 2017-06-20 | 上海贝尔股份有限公司 | A kind of low-frequency vibrator and a kind of multifrequency multi-port antenna device |
| US11848492B2 (en) | 2015-12-10 | 2023-12-19 | Rfs Technologies, Inc. | Low band dipole and multi-band multi-port antenna arrangement |
| KR102412429B1 (en) * | 2015-12-10 | 2022-06-23 | 노키아 상하이 벨 씨오., 엘티디 | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| KR20200118253A (en) * | 2015-12-10 | 2020-10-14 | 노키아 상하이 벨 씨오., 엘티디 | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| CN107046166A (en) * | 2016-08-31 | 2017-08-15 | 武汉虹信通信技术有限责任公司 | A kind of low section base station antenna radiation unit and antenna |
| CN107317100A (en) * | 2017-05-18 | 2017-11-03 | 广州杰赛科技股份有限公司 | A kind of dual polarization antenna radiation unit and antenna assembly |
| CN107369895A (en) * | 2017-06-26 | 2017-11-21 | 西安电子科技大学 | One kind orientation high-gain microstrip antenna |
| CN107394387A (en) * | 2017-09-11 | 2017-11-24 | 成都德杉科技有限公司 | A kind of wideband dual polarized microstrip antenna based on magnetic coupling feed structure |
| CN108123219A (en) * | 2017-12-19 | 2018-06-05 | 广东曼克维通信科技有限公司 | Wide bandwidth base station antenna and base station system |
| US10998631B2 (en) | 2018-02-13 | 2021-05-04 | Sercomm Corporation | Antenna system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20180612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |