CN101197470A - Broadband dual-polarization antenna feeder unit - Google Patents
Broadband dual-polarization antenna feeder unit Download PDFInfo
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- CN101197470A CN101197470A CNA2007101885854A CN200710188585A CN101197470A CN 101197470 A CN101197470 A CN 101197470A CN A2007101885854 A CNA2007101885854 A CN A2007101885854A CN 200710188585 A CN200710188585 A CN 200710188585A CN 101197470 A CN101197470 A CN 101197470A
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Abstract
The invention provides a dual-polarization broad band antenna feeder unit, which adopts a dipole which uses two striplines to feed to form a crossed structure, is fixed on an earth plate, and forms an angle of plus 45 degrees and an angle of minus 45 degrees with the axis of the earth plate serving as an angle bisector on which a separating metal sheet (27) is fixed. The conduction bands arranged on the upper ends of the two striplines bend and are arranged deviating form central points of respective dipole radiation arms and pass through crosswise up and down at the central points of respective dipole radiation arms and fixed on two radiation arms (7) and (4) which deviate far form the central points. The width of the conduction bands of the striplines, a supporting plate, and the radiation arms are respectively W3, W2 and W1. The distance between the two radiations of the dipole is W4; and the distances form the radiation arms to the central points are W5 and W6. W1, W2, W3, W4, W5, W6 as well as the height, width and position of the metal sheet (27) are all adjustable. The invention has the advantages of the frequency broad bands and an isolation of 30 Db, can compose dual-polarization array antennae, wherein HPBWH is equal to 65 degrees and HPBWH is equal to 90 degrees, for use as base station antennae of double-frequency and tri-frequency.
Description
Technical field
The present invention relates to antenna technology, is a kind of wideband dual polarized basic air feedback unit specifically, can be used for making antenna of mobile communication base station.
Background technology
Along with the countries in the world rapid development of economy, the pile group of urban compact holds up like rain afterwards spring bamboo is high, make the communication environments of mobile communication electric wave become more and more abominable, in order to overcome the signal fadeout that multipath effect causes mobile communication, adopting the space diversity of being made up of two same antennas is a kind of effective solution.But along with the increase of multiple communication service and the continuous enhancing of residents ' health consciousness, the more and more difficult position that utilizes space diversity that two antennas are installed of finding in the city, force people must reduce antenna amount and installing space, so with regard to having occurred the linear polarized antenna that two quadratures are isolated is combined, is constituted and utilize polarization diversity to improve the dual polarized antenna that multipath effect causes signal fadeout.
The low-cost antenna in the broadband of base station use at present mainly is to use single-polarized antenna, and this single-polarized antenna adopts the symmetrical dipole of feed microstrip line, and the feed conduction band is positioned at the center of the strip line of double as symmetrical dipole radiation arm supporting construction.In order to realize the basic air feedback unit of dual polarization, can only line up T type and rhombus to the low-cost air feedback unit in this broadband, constitute low-cost T type in broadband and the basic air feedback unit of rhombus dual polarization.For example they are installed on the narrower U-shaped ground plate of width, just can constitute horizontal plane half-power beam width HPBW
H=65 ° double-polarization plate antenna.For example adopt number of patent application to be: 2,007 1,001 7809.5 air feedback unit just is easy to constitute horizontal plane half-power beam width HPBW
H=65 ° double-polarization plate antenna, but to adopt this air feedback unit will constitute horizontal plane half-power beam width HPBW
H=90 ° double-polarization plate antenna just must be widened the width of U type ground plate, has so not only increased the antenna cost, and the weight of antenna is increased.
Have the used U type symmetrical dipole of cross Bipolarization antenna for base station battle array now again owing to use coaxial feeding, make complex structure, the cost height of antenna, particularly exist frequency band narrow, the shortcoming that isolation and passive third order intermodulation are difficult up to standard.
The content of invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of simple in structure, cost is low, in light weight, be suitable for the wideband dual polarized air feedback unit that antenna for base station uses,, mention antenna performance with convenient isolation and the passive third order intermodulation that realizes antenna.
The object of the present invention is achieved like this:
According to theory and simulation analysis, if will on narrow base plate, constitute horizontal plane half-power beam width HPBW
H=90 ° Bipolarization antenna for base station needs with cross dual polarization air feedback unit.Technical scheme of the present invention is that the structure with the broadband low cost symmetrical dipole of strip line feed of original applicant invention is further improved, and constitutes cross wideband dual polarized air feedback unit, both can constitute horizontal plane half-power beam width HPBW with it
H=90 ° double polarization array antenna also can constitute HPBW
H=65 ° double polarization array antenna.This wideband dual polarized air feedback unit comprises oscillator, supporting bracket, ground plate, wherein oscillator adopts two symmetrical dipoles by crooked strip line feed, these two symmetrical dipoles are arranged according to decussate texture and are fixed on the ground plate, the conduction band of these two crooked strip lines is offset to the central point of symmetrical dipole radiation arm separately, and is separately fixed on distance center point two radiation arms far away.
Described two crooked strip lines are being high infraversion malposition by the position of symmetrical dipole radiation arm central spot separately.
The radiation arm width W 1 of described symmetrical dipole equates with the width W 2 of supporting bracket or do not wait, i.e. W1=W2 or W1 ≠ W2.
The width W 3 of described crooked strip line conduction band is respectively less than the width W 2 of supporting bracket and the width W 1 of radiation arm, i.e. W3＜W1, W3＜W2.
Described distance center point radiation arm distance W 6 far away is 11/12 of two radiation arm spacings of symmetrical dipole W4, i.e. W6=11*W4/12.
The angular bisector of described decussate texture is provided with the isolating metal sheet, and this isolating metal sheet is fixed on the ground plate.
The width W 3 of described crooked strip line conduction band, the width W 2 of supporting bracket, radiation arm width W 1, distance W 5, the W6 of symmetrical dipole two radiation arm spacings W4 and radiation arm distance center point are adjustable.
The present invention can avoid widening the problem that U type ground plate width increases cost owing to adopt the conduction band with strip line to be offset to the structure of the central point of symmetrical dipole radiation arm separately; Owing on the angular bisector of decussate texture, added the isolating metal sheet, further improve the isolation between ± 45 ° of linear polarized antenna ports simultaneously; In addition because the width W 3 of strip line conduction band, the width W 2 of supporting bracket, radiation arm width W 1, distance W 5, the W6 of symmetrical dipole two radiation arm spacings W4 and radiation arm distance center point is adjustable, so can be easy to realize wideband impedance match.
Emulation and measured result show: the cross dual polarization air feedback unit that the low-cost antenna for base station in broadband of the present invention uses, in the 806-960MHz frequency range, promptly in 17.4% relative bandwidth, the isolation of surveying between ± 45 ° of dual-port antennas reaches 30dB, the voltage standing wave ratio VSWR of each port≤1.5, gain G=8-9dBi, HPBW
H=68 °～70 °, the size of adjustment U type ground plate also can obtain other horizontal plane half-power beam width.Make antenna for base station with air feedback unit of the present invention and have that cost is low, in light weight, the advantage of bandwidth, both can constitute HPBW
H=65 ° double-polarization plate antenna also constitutes HPBW
H=90 ° double-polarization plate antenna.
Purpose of the present invention, feature and advantage further are explained as follows with reference to accompanying drawing.
Description of drawings
Fig. 1 is the schematic perspective view of dual polarization air feedback unit of the present invention;
Fig. 2 is the top view of dual polarization air feedback unit of the present invention;
Fig. 3 is port VSWR and the isolation curve chart of dual polarization air feedback unit of the present invention in the actual measurement of 806-960MHz frequency range;
Fig. 4 is in the dual polarization air feedback unit of the present invention ,-45 ° of level and elevation radiation patyterns that are polarized in the f=806MHz actual measurement;
Fig. 5 is in the dual polarization air feedback unit of the present invention ,+45 ° of level and elevation radiation patyterns that are polarized in the f=890MHZ actual measurement;
Fig. 6 is in the dual polarization air feedback unit of the present invention ,-45 ° of level and elevation radiation patyterns that are polarized in the f=960MHZ actual measurement.
Embodiment
Referring to Fig. 1 and Fig. 2, the present invention includes a pair of symmetrical dipole 1, feeding network 2, U type ground plate 3.The radiation arm 6,7 of this a pair of symmetrical dipole and 4,5 is by cross structural arrangement, four vertical respectively metal profile 8,9 and 10,11 that connect of radiation arm, the lower end of four metal profile has mounting panel 18,19 and 20,21 respectively, all have installing hole 22 on the mounting panel 18,19 and 20,21, cross radiation arm 6,7 and 4,5 is fixed on the U type ground plate 3 by two installing hole 22 stakings respectively, becomes with the ground plate axis ± 45 °.This feeding network 2 is made up of two strip lines 12,13, upper end conduction band 14 bendings of strip line 12, and be offset to the central point of symmetrical dipole radiation arm 6 and 7, being fixed on off-center puts on the longer-distance radiation arm 7, upper end conduction band 16 bendings of strip line 13, and the central point of biasing symmetrical dipole radiation arm 4 and 5, be fixed on off-center and put on the longer-distance radiation arm 4.In the time of fixedly, conduction band 14 and 16 is not only wanted the bending of level intersection, and want high infraversion malposition in position by symmetrical dipole radiation arm central spot separately, in order to avoid short circuit, be the position that conduction band 16 will exceed conduction band 14, be connected at the fixing point 17 of radiation arm 4 and the fixing point 15 places staking of radiation arm 7 respectively again; The lower end 23,25 of conduction band 14,16 links to each other with the inside conductor of coaxial line or the band line of microstrip line by the aperture 24,26 on the U type ground plate 3 respectively, finishes the balanced feeding task of transmission line-strip line to two title oscillators, and coaxial line or strip line do not draw among the figure.
Two symmetrical radiation arms 4,5 and 6,7 width are W1, support their metallic plate 8,9 and 10,11 width and are W2, and the width of conduction band 14,16 is W3.The radiation arm width W 1 of symmetrical dipole equates with the width W 2 of supporting bracket or do not wait, i.e. W1=W2 or W1 ≠ W2.The width W 3 of crooked strip line conduction band is both less than the width W 2 of supporting bracket, also less than the width W 1 of radiation arm, i.e. and W3＜W1, W3＜W2.Conduction band departs from symmetrical dipole radiation arm central point radiation arm distance far away and is W6, conduction band departs from the nearer radiation arm distance of symmetrical dipole radiation arm central point and is W5, the spacing of two radiation arms of symmetrical dipole is W4, this W6 is 11/12 of two radiation arm spacings of symmetrical dipole W4, i.e. W6=11*W4/12.In order to realize the impedance matching of each port, the width W 3 of this bending strip line conduction band, the width W 2 of supporting bracket, radiation arm width W 1, distance W 5, the W6 of symmetrical dipole two radiation arm spacings W4 and radiation arm distance center point are adjustable.In order to realize best interport isolation, on the angular bisector of decussate texture, be provided with isolating metal sheet 27, this isolating metal sheet is fixed on the U type ground plate 3 by installing hole 22.The width of sheet metal 27, highly, the distance cross symmetrical dipole the position be adjustable.
The above-mentioned cross dual polarization air feedback unit of the present invention is all made with aluminium.
Referring to Fig. 3, be that the basic air feedback unit of the cross dual polarization of the present invention is respectively at the actual measurement VSWR of ± 45 ° of ports frequency characteristics.Find out by Fig. 3, in the 806-960MHz frequency range, promptly in 17.4% relative bandwidth, at ± 45 ° of ports, VSWR≤1.5, the isolation between port is greater than 30dB.
Referring to Fig. 4, Fig. 5, Fig. 6, provided f=806MHz respectively, 890MHz, the horizontal plane and the elevation radiation patytern of a port of 960MHz actual measurement, because the directional diagram of two ports is basic identical, so only provide the directional diagram of a port, concrete half-power beam width such as following table:
| f(MHz) | 806 | 890 | 960 |
| HPBW H | 68.8° | 70.1° | 68.2° |
| HPBW E | 74.9° | 79.1° | 89.4° |
By actual measurement directional diagram 4, Fig. 5, Fig. 6 as can be seen, low at the height of 806--960MHz, in satisfy the HPBW of antenna for base station defined on three frequencies
H=65 ° ± 6 ° requirement.
Claims (8)
1. one kind is suitable for the wideband dual polarized air feedback unit that antenna for base station uses, comprise oscillator, supporting bracket, ground plate, it is characterized in that oscillator adopts two symmetrical dipoles by crooked strip line feed (1), these two symmetrical dipoles are arranged according to decussate texture and are fixed on the ground plate (3), the conduction band of these two crooked strip lines (14) and (16) are offset to the central point of symmetrical dipole radiation arm separately, and are separately fixed on off-center point two radiation arms (7) and (4) far away.
2. dual polarization air feedback unit according to claim 1 is characterized in that the conduction band (14) of two crooked strip lines and (16) are being high infraversion malposition by the position of symmetrical dipole radiation arm central spot separately.
3. dual polarization air feedback unit according to claim 1, the radiation arm width W 1 that it is characterized in that symmetrical dipole equate with the width W 2 of supporting bracket or do not wait, i.e. W1=W2 or W1 ≠ W2.
4. the basic air feedback unit of dual polarization according to claim 1, the width W 3 that it is characterized in that crooked strip line conduction band be respectively less than the width W 2 of supporting bracket and the width W 1 of radiation arm, i.e. W3＜W1, W3＜W2.
5. dual polarization air feedback unit according to claim 1, the distance W 6 that it is characterized in that the radiation arm that off-center point is far away are 11/12 of two radiation arm spacings of symmetrical dipole W4, i.e. W6=11*W4/12.
6. dual polarization air feedback unit according to claim 1 is characterized in that the cross angular bisector of two symmetrical dipoles is provided with isolating metal sheet (27), and this isolating metal sheet is fixed on the ground plate (3).
7. according to claim 3 or 4 or 5 described dual polarization air feedback units, the width W 3 that it is characterized in that crooked strip line conduction band, the width W 2 of supporting bracket, radiation arm width W 1, distance W 5, the W6 of symmetrical dipole two radiation arm spacings W4 and radiation arm distance center point are adjustable.
8. want the basic air feedback unit of 6 described dual polarizations according to right, it is characterized in that the width of sheet metal (27), highly, the distance cross symmetrical dipole the position be adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101885854A CN101197470B (en) | 2007-12-12 | 2007-12-12 | Broadband dual-polarization antenna feeder unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101885854A CN101197470B (en) | 2007-12-12 | 2007-12-12 | Broadband dual-polarization antenna feeder unit |
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| CN101197470A true CN101197470A (en) | 2008-06-11 |
| CN101197470B CN101197470B (en) | 2011-08-24 |
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| CN2007101885854A Expired - Fee Related CN101197470B (en) | 2007-12-12 | 2007-12-12 | Broadband dual-polarization antenna feeder unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102834968A (en) * | 2012-05-29 | 2012-12-19 | 华为技术有限公司 | Dual polarized antenna radiation unit and base station antenna |
| CN106207469A (en) * | 2016-08-30 | 2016-12-07 | 广东盛路通信科技股份有限公司 | Dual-band and dual-polarization indoor directional antenna and preparation method thereof |
| CN107968253A (en) * | 2017-12-21 | 2018-04-27 | 京信通信系统（中国）有限公司 | Mimo antenna system, aerial array and its low frequency radiating element |
| CN109175580A (en) * | 2018-09-18 | 2019-01-11 | 中天宽带技术有限公司 | A kind of combined type oscillator mounting device |
| CN110034371A (en) * | 2019-04-01 | 2019-07-19 | 深圳市信维通信股份有限公司 | Wideband base station element antenna and antenna for base station |
| WO2021082968A1 (en) * | 2019-10-31 | 2021-05-06 | Oppo广东移动通信有限公司 | Antenna module and electronic device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20210158218A (en) * | 2020-06-23 | 2021-12-30 | 삼성전자주식회사 | Antenna structure in wireless communication system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6072439A (en) * | 1998-01-15 | 2000-06-06 | Andrew Corporation | Base station antenna for dual polarization |
| US6034649A (en) * | 1998-10-14 | 2000-03-07 | Andrew Corporation | Dual polarized based station antenna |
| CN1976124B (en) * | 2006-12-01 | 2011-05-18 | 华南理工大学 | Double polarization T-type matched folded dipole base station antenna |
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2007
- 2007-12-12 CN CN2007101885854A patent/CN101197470B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102834968A (en) * | 2012-05-29 | 2012-12-19 | 华为技术有限公司 | Dual polarized antenna radiation unit and base station antenna |
| WO2013177752A1 (en) * | 2012-05-29 | 2013-12-05 | 华为技术有限公司 | Dual-polarization antenna radiation unit and base station antenna |
| CN102834968B (en) * | 2012-05-29 | 2014-12-03 | 华为技术有限公司 | Dual polarized antenna radiation unit and base station antenna |
| US9698493B2 (en) | 2012-05-29 | 2017-07-04 | Huawei Technologies Co., Ltd. | Dual-polarized antenna radiating element and base station antenna |
| CN106207469A (en) * | 2016-08-30 | 2016-12-07 | 广东盛路通信科技股份有限公司 | Dual-band and dual-polarization indoor directional antenna and preparation method thereof |
| CN107968253A (en) * | 2017-12-21 | 2018-04-27 | 京信通信系统（中国）有限公司 | Mimo antenna system, aerial array and its low frequency radiating element |
| CN109175580A (en) * | 2018-09-18 | 2019-01-11 | 中天宽带技术有限公司 | A kind of combined type oscillator mounting device |
| CN109175580B (en) * | 2018-09-18 | 2023-11-24 | 中天宽带技术有限公司 | Combined vibrator mounting device |
| CN110034371A (en) * | 2019-04-01 | 2019-07-19 | 深圳市信维通信股份有限公司 | Wideband base station element antenna and antenna for base station |
| CN110034371B (en) * | 2019-04-01 | 2024-01-16 | 深圳市信维通信股份有限公司 | Broadband base station oscillator antenna and base station antenna |
| WO2021082968A1 (en) * | 2019-10-31 | 2021-05-06 | Oppo广东移动通信有限公司 | Antenna module and electronic device |
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| CN101197470B (en) | 2011-08-24 |
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Assignee: Shaanxi Haitong Antenna Co.,Ltd. Assignor: Xi'an Haitian Antenna Sci-tech Co., Ltd. Contract record no.: 2011610000146 Denomination of invention: Broadband dual-polarization antenna feeder unit License type: Exclusive License Open date: 20080611 Record date: 20110801 |
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Assignee: Shaanxi Haitong Antenna Co.,Ltd. Assignor: Xi'an Haitian Antenna Sci-tech Co., Ltd. Contract record no.: 2011610000146 Date of cancellation: 20120702 |
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Effective date of registration: 20121210 Address after: 710075 No. three, No. 68, hi tech Zone, Shaanxi, Xi'an Patentee after: Xi'an Haitian Antenna Technologies Co., Ltd. Address before: 710071 No. 6, No. 36, hi tech Road, Shaanxi, Xi'an Patentee before: Xi'an Haitian Antenna Sci-tech Co., Ltd. |
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