CN203260740U - Multi-antenna array with dissymmetrical feed - Google Patents
Multi-antenna array with dissymmetrical feed Download PDFInfo
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- CN203260740U CN203260740U CN 201320274327 CN201320274327U CN203260740U CN 203260740 U CN203260740 U CN 203260740U CN 201320274327 CN201320274327 CN 201320274327 CN 201320274327 U CN201320274327 U CN 201320274327U CN 203260740 U CN203260740 U CN 203260740U
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- reflecting plate
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Abstract
The utility model discloses a multi-antenna array with a dissymmetrical feed and relates to the multi-antenna array in the field of wireless mobile communication technology. The multi-antenna array with the dissymmetrical feed comprises baffle boards (10), antenna radiating elements (20) and feed networks (30); M baffle boards (10) are horizontally arranged side by side; N antenna radiating elements (20) are arranged at an equal distance on vertical central axes of the front face of each reflection plate (30); one feed network (30) is arranged on the back face of each reflection plate (30), and the N antenna radiating elements (20) are separately connected with the feed network (30); and a dual-polarization mode of +/- 45 degrees is used, namely a dissymmetrical feed mode. After the dissymmetrical feed mode is introduced to the multi-antenna array, the identification rate of the cross-polarization of antennas is greatly improved, so the dependence of the antennas of the array on the machining precision and physical dimension of the baffle boards is effectively reduced, and the introduced dissymmetrical feed mode has great significance for cost reduction of the antennas and performance improvement of the multi-antenna array.
Description
Technical field
The utility model relates to the multi-antenna array in the wireless mobile telecommunication technology field, relates in particular to a kind of multi-antenna array of asymmetric feed.
Background technology
In the wireless mobile telecommunication technology field, the effect of antenna mainly is be used to transmitting and receiving signal.At present, main flow tracking exchage antenna many by two groups have mutually orthogonal polarised direction ± 45 ° of dual-polarization radiating units form, every group of radiating element satisfies identical array features, the correlation of different polarised direction interchannels a little less than, can produce the effect of polarization diversity.
Cross polarization discrimination is the key index that determines dual polarized antenna polarization diversity effect, in antenna transmission and reception signal process, the height of cross polarization discrimination has directly determined the height that comes wave energy that reception antenna receives, and axially cross polarization discrimination can produce certain influence to downlink forming and uplink interference.At present, the mutually orthogonal radiating element of the many employings of tracking exchage antenna reduces the correlation between same polarization and heteropole radiating element, but because the restriction of the factors such as polarization purity, frequency range, bandwidth and beamwidth of radiating element self, cross polarization discrimination is the difficult point of multi-antenna array exploitation often.For multi-antenna array, the mode of feed has determined the mode of polarization, and consistency and the polarization purity of impact polarization become one of principal element of restriction cross polarization discrimination.
Such as Fig. 1,2, traditional multi-antenna array comprises reflecting plate 10, antenna radiation unit 20 and feeding network 30;
Distributing point and Ba Lun balance point all are symmetrical on dimension with respect to reflecting plate 10, it is the vertical centering control axis left and right sides that distributing point and Ba Lun balance point all are positioned at reflecting plate 10, when antenna holder was located on the launching tower, this feeding classification was symmetrical for whole multi-antenna array.
The shortcoming and defect of above-mentioned traditional multi-antenna array is: after multi-antenna array is taked symmetrical feeding classification, by selecting different antenna radiation unit 20, perhaps adjust the form of the reflecting plate 10 of antenna, perhaps adjust the modes such as height of radiating element 20, also can play to the cross polarization discrimination of multi-antenna array the effect of improvement; But the amplitude of improving especially for wide frequency antenna, does not often reach desirable effect.
The utility model content
The purpose of this utility model just is to overcome the shortcoming and defect that prior art exists, and a kind of multi-antenna array of asymmetric feed is provided.
The purpose of this utility model is achieved in that
Comprise reflecting plate, antenna radiation unit and feeding network;
M reflecting plate horizontal Tile arranged, and the first-class distance of vertical centering control axis is provided with N antenna radiation unit in the front of each reflecting plate, is provided with feeding network at the back side of each reflecting plate, and N antenna radiation unit is connected with feeding network respectively;
M, N are natural number, 1≤M≤5; 5≤N≤12;
Polarization mode is ± 45 ° of dual polarizations;
Spacing between row and the row is λ/2, and λ is electromagnetic wavelength corresponding to center frequency point, and its computing formula is λ=c/f, and c is the light velocity, the frequency of frequency centered by the f;
Spacing between the antenna radiation unit is d, 0＜d＜λ;
The vertical centering control axis of each row is respectively 11
/ , 22
/ , 33
/ , 44
/ , A, B, C, D are respectively the distributing point of each antenna radiation unit;
If 2 of A, B are respectively 45 ° of ﹢ ,-45 ° of distributing points corresponding to two-way orthogonal polarization, then 2 of D, C are respectively 45 ° of ﹢ ,-45 ° of Ba Lun balance points that the two-way orthogonal polarization is corresponding;
If 2 of C, D are respectively 45 ° of ﹢ ,-45 ° of distributing points corresponding to two-way orthogonal polarization, then 2 of B, A are respectively 45 ° of ﹢ ,-45 ° of Ba Lun balance points that the two-way orthogonal polarization is corresponding;
Distributing point all is asymmetrical on dimension with respect to reflecting plate, i.e. the distributing point horizontal median axis both sides up and down that all are positioned at reflecting plate.
Working mechanism of the present utility model: the position influence antenna cross-polarization resolution of distributing point is especially larger on many antenna impacts.The utility model has changed the position of distributing point, with traditional distributing point with respect to the symmetrical mode in reflecting plate axis, be set to respect to the laterally zygomorphic mode in reflecting plate axis, for symmetrical reflecting plate and radiating element, introduced a kind of defective, this defect effect has affected the polarization purity of two kinds of different polarization modes, thereby so that obviously improvement occurs cross polarization discrimination.
The utlity model has following advantages and good effect:
1. after asymmetric feeding classification is introduced multi-antenna array, can greatly improve the cross polarization discrimination of antenna, namely under identical reflecting plate form, can realize that axial cross polarization discrimination improves more than the 8dB, ± 60 ° of cross polarization discriminations improve more than the 3dB, thereby can effectively reduce array antenna to the dependence of reflecting plate machining accuracy, physical size, for reducing the antenna cost, improve simultaneously the multi-antenna array index and be significant.
2. after asymmetrical feeding classification is introduced multi-antenna array, when many antenna cross-polarization resolution is improved, can not destroy other radiation parameters of multi-antenna array.
3. be applicable to LTE(Long Term Evolution, Long Term Evolution) two passage dual polarized antennas, eight passage dual polarized antennas and other multichannels MIMO(Multiple Input Multiple Output, multiple-input and multiple-output) many antennas.
Description of drawings
Fig. 1 is the structural representation of traditional multi-antenna array;
Fig. 2 is the feeding classification schematic diagram of traditional multi-antenna array;
Fig. 3 is the utility model multi-antenna array feeding classification schematic diagram.
Among the figure:
10-reflecting plate;
20-antenna radiation unit;
30-feeding network.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, overall
Such as Fig. 3, the utility model is the improvement to traditional multi-antenna array, and its feeding classification is asymmetrical.
Specifically, the utility model comprises reflecting plate 10, antenna radiation unit 20 and feeding network 30;
M, N are natural number, 1≤M≤5; 5≤N≤12;
Polarization mode is ± 45 ° of dual polarizations;
Spacing between row and the row is λ/2, and λ is electromagnetic wavelength corresponding to the center frequency point of aerial array work, and its computing formula is λ=c/f, and c is the light velocity, the frequency of frequency centered by the f;
Spacing between the antenna radiation unit 20 is d, 0＜d＜λ;
Vertical centering control axis (among the figure shown in the dotted line) of each row is respectively 11
/ , 22
/ , 33
/ , 44
/ , A, B, C, D are respectively the distributing point of each antenna radiation unit 20;
If 2 of A, B are respectively 45 ° of ﹢ ,-45 ° of distributing points that the two-way orthogonal polarization is corresponding (that is to say the signal input point), namely enter from here basic radiating element from signal input port through the signal that transmission line and feeding network transmit, then 2 of D, C are respectively 45 ° of ﹢ ,-45 ° of Ba Lun balance points (that is to say the signal ground point) that the two-way orthogonal polarization is corresponding, and the signal that namely transmits through transmission line and feeding network from signal input port is ground connection from here; For traditional many antenna feed mode (such as Fig. 2), feed position has been rotated counterclockwise 90 ° by former A, B at 2, has moved to the position of 2 of A, C; The Ba Lun balance point then has been rotated counterclockwise 90 ° by former C, D at 2, has moved to the position of 2 of B, D, and the signal input point of aerial array and signal ground point integral body has been rotated counterclockwise 90 ° simultaneously.
If 2 of C, D are respectively 45 ° of ﹢ ,-45 ° of distributing points that the two-way orthogonal polarization is corresponding (that is to say the signal input point), namely enter from here basic radiating element from signal input port through the signal that transmission line and feeding network transmit, then 2 of B, A are respectively 45 ° of ﹢ ,-45 ° of Ba Lun balance points (that is to say the signal ground point) that the two-way orthogonal polarization is corresponding, and the signal that namely transmits through transmission line and feeding network from signal input port is ground connection from here; For traditional many antenna feed mode (such as Fig. 2), feed position has been rotated counterclockwise 90 ° by former C, D at 2, has moved to the position of 2 of B, D; The Ba Lun balance point then has been rotated counterclockwise 90 ° by former A, B at 2, has moved to the position of 2 of A, C, and the signal input point of aerial array and signal ground point integral body has been rotated counterclockwise 90 ° simultaneously.
Any in above two kinds of feeding classifications no matter, distributing point all is asymmetrical on dimension with respect to reflecting plate 10, be the horizontal median axis both sides up and down that distributing point all is positioned at reflecting plate 10, when antenna holder was located on the launching tower, this feeding classification was asymmetrical for whole many antenna arrays.
Two, functional part (26S Proteasome Structure and Function)
1, reflecting plate 10
Reflecting plate 10 is a kind of metallic plates, generally adopts the free of contamination environment-friendly materials such as allumen, is installed on the antenna frame, and its function is the horizontal radiation pattern radiation index that changes aerial array.
2, antenna radiation unit 20
3, feeding network 30
Claims (1)
1. the multi-antenna array of an asymmetric feed is characterized in that:
Comprise reflecting plate (10), antenna radiation unit (20) and feeding network (30);
M reflecting plate (10) horizontal Tile is arranged, be provided with N antenna radiation unit (20) in the first-class distance of the front of each reflecting plate (10) vertical centering control axis, be provided with feeding network (30) at the back side of each reflecting plate (10), N antenna radiation unit (20) is connected with feeding network (30) respectively;
M, N are natural number, 1≤M≤5; 5≤N≤12;
Polarization mode is ± 45 ° of dual polarizations;
Spacing between row and the row is λ/2, and λ is electromagnetic wavelength corresponding to center frequency point, and its computing formula is λ=c/f, and c is the light velocity, the frequency of frequency centered by the f;
Spacing between the antenna radiation unit (20) is d, 0＜d＜λ;
The vertical centering control axis of each row is respectively 11
/ , 22
/ , 33
/ , 44
/ , A, B, C, D are respectively the distributing point of each antenna radiation unit (20);
If 2 of A, B are respectively 45 ° of ﹢ ,-45 ° of distributing points corresponding to two-way orthogonal polarization, then 2 of D, C are respectively 45 ° of ﹢ ,-45 ° of Ba Lun balance points that the two-way orthogonal polarization is corresponding;
If 2 of C, D are respectively 45 ° of ﹢ ,-45 ° of distributing points corresponding to two-way orthogonal polarization, then 2 of B, A are respectively 45 ° of ﹢ ,-45 ° of Ba Lun balance points that the two-way orthogonal polarization is corresponding;
Distributing point all is asymmetrical on dimension with respect to reflecting plate (10), i.e. the distributing point horizontal median axis both sides up and down that all are positioned at reflecting plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320274327 CN203260740U (en) | 2013-05-20 | 2013-05-20 | Multi-antenna array with dissymmetrical feed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320274327 CN203260740U (en) | 2013-05-20 | 2013-05-20 | Multi-antenna array with dissymmetrical feed |
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| Publication Number | Publication Date |
|---|---|
| CN203260740U true CN203260740U (en) | 2013-10-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900987A (en) * | 2015-05-13 | 2015-09-09 | 武汉虹信通信技术有限责任公司 | Broadband radiating unit and antenna array |
| CN105048111A (en) * | 2015-06-17 | 2015-11-11 | 武汉虹信通信技术有限责任公司 | Array antenna organizing method |
| CN106329116A (en) * | 2016-08-31 | 2017-01-11 | 武汉虹信通信技术有限责任公司 | Small-scale LTE multi-array antenna |
| CN107634349A (en) * | 2016-06-10 | 2018-01-26 | 英特尔Ip公司 | Array antenna is arranged |
| WO2018049692A1 (en) * | 2016-09-19 | 2018-03-22 | 华为技术有限公司 | Two-dimensional antenna and network device |
| CN113490858A (en) * | 2019-01-31 | 2021-10-08 | 弗劳恩霍夫应用研究促进协会 | Participant of a communication system with a magnetic antenna |
-
2013
- 2013-05-20 CN CN 201320274327 patent/CN203260740U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900987A (en) * | 2015-05-13 | 2015-09-09 | 武汉虹信通信技术有限责任公司 | Broadband radiating unit and antenna array |
| CN104900987B (en) * | 2015-05-13 | 2019-01-29 | 武汉虹信通信技术有限责任公司 | A kind of broadband radiating unit and aerial array |
| CN105048111A (en) * | 2015-06-17 | 2015-11-11 | 武汉虹信通信技术有限责任公司 | Array antenna organizing method |
| CN107634349A (en) * | 2016-06-10 | 2018-01-26 | 英特尔Ip公司 | Array antenna is arranged |
| US10637154B2 (en) | 2016-06-10 | 2020-04-28 | Intel IP Corporation | Array antenna arrangement |
| CN107634349B (en) * | 2016-06-10 | 2020-09-01 | 英特尔Ip公司 | Array antenna arrangement |
| CN106329116A (en) * | 2016-08-31 | 2017-01-11 | 武汉虹信通信技术有限责任公司 | Small-scale LTE multi-array antenna |
| WO2018049692A1 (en) * | 2016-09-19 | 2018-03-22 | 华为技术有限公司 | Two-dimensional antenna and network device |
| EP3506430A4 (en) * | 2016-09-19 | 2019-08-07 | Huawei Technologies Co., Ltd. | Two-dimensional antenna and network device |
| US11075467B2 (en) | 2016-09-19 | 2021-07-27 | Huawei Technologies Co., Ltd. | Two-dimensional antenna and network device |
| EP3930099A1 (en) * | 2016-09-19 | 2021-12-29 | Huawei Technologies Co., Ltd. | Two-dimensional antenna and network device |
| CN113490858A (en) * | 2019-01-31 | 2021-10-08 | 弗劳恩霍夫应用研究促进协会 | Participant of a communication system with a magnetic antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |