CN203260740U - Multi-antenna array with dissymmetrical feed - Google Patents

Multi-antenna array with dissymmetrical feed Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
antenna
feed
reflecting plate
antenna array
dissymmetrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201320274327
Other languages
Chinese (zh)
Inventor
郭继权
石萌
李朝旭
吴杨
李孜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CICT Mobile Communication Technology Co Ltd
Original Assignee
Wuhan Hongxin Telecommunication Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Hongxin Telecommunication Technologies Co Ltd filed Critical Wuhan Hongxin Telecommunication Technologies Co Ltd
Priority to CN 201320274327 priority Critical patent/CN203260740U/en
Application granted granted Critical
Publication of CN203260740U publication Critical patent/CN203260740U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)

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

A kind of multi-antenna array of asymmetric feed
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 reflecting plate 10 horizontal Tiles are arranged, the first-class distance of vertical centering control axis is provided with N antenna radiation unit 20 in the front of each reflecting plate 10, 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 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
Antenna radiation unit 20 is a kind of dual-polarized half-wave doublets, can be die cast metal form or PCB(Printed circuit board, printed circuit board (PCB)) the little band forms of plate, its function is the antenna basic radiating element, participates in the aerial array radiation.
3, feeding network 30
Feeding network 30 is a kind of interface units that connect between antenna radiation unit 20 and the transmission line, can be pcb board microstrip line form, metal merit divide plate form, pure coaxial cable form or coaxial cable to divide plate in conjunction with merit (merit is divided plate: a kind of power divider, generally be the PCB form) form, be installed on the reflecting plate back side, the energy signal that its function is sent transmission line here according to certain power, phase assignments in each basic radiating element 20.

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).
CN 201320274327 2013-05-20 2013-05-20 Multi-antenna array with dissymmetrical feed Expired - Lifetime CN203260740U (en)

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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320274327 CN203260740U (en) 2013-05-20 2013-05-20 Multi-antenna array with dissymmetrical feed

Publications (1)

Publication Number Publication Date
CN203260740U true CN203260740U (en) 2013-10-30

Family

ID=49473279

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320274327 Expired - Lifetime CN203260740U (en) 2013-05-20 2013-05-20 Multi-antenna array with dissymmetrical feed

Country Status (1)

Country Link
CN (1) CN203260740U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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

Cited By (12)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN203260740U (en) Multi-antenna array with dissymmetrical feed
WO2018001007A1 (en) Dense array antenna for use in 5g system
EP3214700A1 (en) Intelligent antenna device
CN105634627B (en) Antenna array coupling calibration network device and calibration method
US9118117B2 (en) Receiving and transmitting device for wireless transceiver
CN102570055B (en) Dual-polarization eight-wave-beam antenna for mobile communication base station
CN203013940U (en) Antenna distributed in dual-polarization chamber
CN208189786U (en) A kind of multibeam antenna based on broadband combiner
CN105703064A (en) Novel metal back cavity dual-polarization broadband radiation unit
US7812768B2 (en) Multiple input multiple output antenna
CN104283007A (en) Feed network for reducing mutual coupling between antenna array units
CN102280696A (en) Half-wave transmission decoupling small-space microstrip array antenna
CN102117973A (en) Dual-polarized indoor distributed antenna
CN103022727A (en) Low-profile one-dimensional active transceiving phased-array antenna for satellite communication in motion
CN102868017A (en) Radiation device and array antenna based on same
CN106450712A (en) Multi-rotor unmanned aerial vehicle high-gain omnidirectional conformal diversity antenna technology
CN202678527U (en) Dual polarization ceiling antenna
CN106207419A (en) A kind of dual circularly polarized antenna unit and big spacing low graing lobe broadband flat plate array antenna
CN207602790U (en) A kind of TD-LTE smart antennas for applying to frequency range near 3500MHz
CN103236589A (en) Curved reflector type multi-antenna array
CN104953291A (en) Double-frequency dual-polarized one-dimensional LTE (long term evolution) antenna
CN204271254U (en) The accurate Yagi spark gap patch antenna array of L-band
CN102280695A (en) Microstrip array antenna with low coupling and small spacing
WO2022083405A1 (en) Antenna, channel state information transmission method, and related apparatus
CN107887684B (en) Mimo antenna array, mimo antenna and base station

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