CN102610928A - Wide-frequency-band, dual-polarized, low-profile composite array antenna for wireless communication base station - Google Patents
Wide-frequency-band, dual-polarized, low-profile composite array antenna for wireless communication base station Download PDFInfo
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- CN102610928A CN102610928A CN2012100894753A CN201210089475A CN102610928A CN 102610928 A CN102610928 A CN 102610928A CN 2012100894753 A CN2012100894753 A CN 2012100894753A CN 201210089475 A CN201210089475 A CN 201210089475A CN 102610928 A CN102610928 A CN 102610928A
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Abstract
The invention discloses a wide-frequency-band, dual-polarized, low-profile composite array antenna for a wireless communication base station. The array antenna comprises dual-polarized array units in various formats, a feeding method of composite array units, a composite feed network, and an array unit power distributing and impedance matching method based on the theory of transmission lines. The array antenna is characterized in that: the array units are composite array antennas formed by angular feed dual-polarized radiation chip units in four formats; partial array units employ a direct feed way while other array units employ a coupling feed way; the whole array is divided into a plurality of serially fed sub-arrays, then the plurality of serially fed sub-arrays form the composite feed array antenna by a parallel feed way; and on feed transmission lines, by changing the characteristic impedance of the transmission lines, power distribution and impedance matching design of the array units are carried out by utilizing the theory of transmission lines. The array antenna has the advantages of wide frequency band, dual polarization, low profile, shaped beam and the like.
Description
Technical field
The present invention relates to a kind of radio communication base station array antenna.Be a kind of wideband section, dual polarization, low section radio communication base station array antenna specifically.
Background technology
The radio communication base station array antenna need satisfy specific technical specification, like broadband, high efficiency, low section, light weight etc.For large-scale wireless lan (wlan) array based station antenna, in order to realize dual polarization and broadband, tend to adopt baroque wideband dual polarized radiating element that all array elements are the array element with a kind of form; If the array antenna carries out beam forming processing, then feeding network can adopt and present or and the feedback and the combined type feeding classification of series feed mixing.Simultaneously, generally also can on feeding network, add matching network, will cause the complicated or even sandwich construction of whole array antenna structure like this, cause that loss increase, reliability reduce, cost increases in order to carry out impedance matching.How to simplify dual polarization, shaped-beam WLAN base station array antenna structure, reducing the manufacturing cost of feeder loss, reduction antenna and the reliability of raising array antenna is a technical barrier that faces in the design of radio communication base station array antenna.
Summary of the invention
Problem to be solved by this invention; Be to overcome the defective that prior art exists; Propose the low section combined type radio communication base station array antenna of a kind of wideband section dual polarization, had wide impedance operator, can dual polarization work, section is low, beam shape with figuration.Simple in structure, with low cost, gain advantages of higher.
Section combined type radio communication base station array antenna (being called for short this antenna) is hanged down in wideband section of the present invention dual polarization, comprising: the dual-polarized array unit of various ways; Hybrid array element feed method; The combined type feeding network; Array element power division and impedance matching methods based on transmission line theory.It is characterized in that: said array element is the combined type array antenna that the angle feedback dual polarised radiation chip unit of four kinds of forms is formed; The paster of the 1st kind of form loads square patch, the 2nd kind of form for fluting paster loads square patch, the 3rd kind of form for fluting and afterbody rectangle paster loads square patch, the 4th kind of form for fluting and two ends paster loads square patch for fluting and input taper; On the feeding classification of array element, adopted hybrid feed method, the partial array unit adopts the mode of direct feed, and other array elements adopt the coupling feeding classification; Whole permutation is divided into a plurality of series feed subarrays, and the combined type feeding network that adopts string and feedback method to form again carries out feed to each subarray; On the feed transmission line, utilize transmission line theory to adopt the method that changes line characteristic impedance, the power division and the designing impedance matching of array element carried out in the input impedance that promptly on transmission line, increases the method change array element of tuning band.
The present invention has wide impedance operator, and impedance bandwidth can reach 23% (weighing less than 1.5 with standing-wave ratio), and the directional diagram bandwidth can reach 17%.Can be simultaneously with positive and negative 45 degree linear polarization modes work, wave beam can carry out the figuration design with the need, can realize the characteristic of Low Sidelobe, high-gain.Simultaneously simple in structure, only need on a bar printing plate, promptly can accomplish the making of entire antenna.Has cheap for manufacturing cost, high reliability features.Antenna height only is 0.06 wavelength of centre frequency.Have the low characteristics of section, be fit to be installed in different occasions.Utilize this array antenna can further improve the performance of entire wireless communication system.
Description of drawings
Fig. 1 is the overall structure figure of array antenna of the present invention, and wherein: (a) being the array element vertical view, (b) is the array element end view.1 is that the angle feedback dual polarised radiation paster, 2 of the 1st kind of form is that the angle feedback dual polarised radiation paster, 3 of the 2nd kind of form is that the angle feedback dual polarised radiation paster, 4 of the 3rd kind of form is the angle feedback dual polarised radiation paster of the 4th kind of form among the figure.The 5th, printed layers, the 6th, the ground plane of printed panel, the 7th, air layer, the 8th, dielectric material, the 9th, the feed transmission line, the 10th of printed layers, excitation port.
Fig. 2 is the standing-wave ratio figure in the whole frequency band of measuring.
Fig. 3 is the array antenna azimuth plane of measuring and attaches the antenna pattern of facing upward.Wherein: (a) be the corresponding array antenna of 5100MHz frequency azimuth plane with attach the antenna pattern of facing upward.(b) be the corresponding array antenna of 5450MHz frequency azimuth plane with attach the antenna pattern of facing upward.(c) be the corresponding array antenna of 5900MHz frequency azimuth plane with attach the antenna pattern of facing upward.
Embodiment
Be described further through 1 couple of the present invention of accompanying drawing and advantage thereof below.
Map 1, this array antenna are printed on the epoxy substrate, and upper layer is the array element and the feeding network of printing, is the PTFE medium substrate below, and then is air layer, are the groundplane layers of printing under.Dielectric substrate is the combined type medium substrate that air and PTFE medium substrate are formed.Array element is the angle feedback dual polarised radiation paster of four kinds of forms.Totally 40 array elements; One half-cell adopts the mode of direct feed; Second half array element (light unit among the figure) adopts the mode of coupling feed; Size through adjustment coupling slit can be regulated the amplitude and the phase value of the signal of each array element distribution, thereby reaches the purpose of wave beam forming.Simultaneously also through regulating tuning input impedance that changes each array element on the transmission line that each array element connects, thereby reach the amplitude and the phase-adjusted purpose of each array element being carried out power.A total array antenna is divided into 16 series feed subarrays.Through string and mixing feeding classification all group of subarrays are synthesized one totally.Through size of regulating transmission line adjusted piece between input port and the array element and the impedance matching that size can be implemented in the input port.
As shown in Figure 2, the antenna standing wave ratio of measurement less than 1.5, has wide band characteristic in whole frequency band.All simultaneously being manufactured on the medium substrate accomplished, and increased the reliability of system.Dual polarization work makes a width of cloth antenna have the function of two width of cloth antennas.Reduced cost.The antenna pattern of measuring is as shown in Figure 3.Can find out that therefrom its minor level is about 20.5dBi less than the average antenna gain of antenna in-12dB, the whole bandwidth, explains that antenna efficiency is reasonable.Above-mentioned test result has been explained the validity of array antenna design.
Claims (1)
1. the low section combined type radio communication base station array antenna of wideband section dual polarization comprises: the dual-polarized array unit of various ways; Hybrid array element feed method; The combined type feeding network; Array element power division and impedance matching methods based on transmission line theory.It is characterized in that: said array element is the combined type array antenna that the angle feedback dual polarised radiation chip unit of four kinds of forms is formed; The partial array unit adopts the mode of direct feed, and other array elements adopt the coupling feeding classification; The combined type feeding network that adopts string and feedback method to form carries out feed to each series feed subarray; The power division and the designing impedance matching of array element carried out in the input impedance of on the feed transmission line, adopting transmission line theory on transmission line, to add the method change array element of tuning band.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210089475.3A CN102610928B (en) | 2012-03-30 | 2012-03-30 | The low section combined type of a kind of wide-band dual polarization radio communication base station array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210089475.3A CN102610928B (en) | 2012-03-30 | 2012-03-30 | The low section combined type of a kind of wide-band dual polarization radio communication base station array antenna |
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| Publication Number | Publication Date |
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| CN102610928A true CN102610928A (en) | 2012-07-25 |
| CN102610928B CN102610928B (en) | 2016-05-11 |
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| CN201210089475.3A Active CN102610928B (en) | 2012-03-30 | 2012-03-30 | The low section combined type of a kind of wide-band dual polarization radio communication base station array antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816718A (en) * | 2017-01-20 | 2017-06-09 | 电子科技大学 | A kind of Sidelobe sharp cut-off flat-topped beam antenna for base station and method for designing |
| CN111052509A (en) * | 2017-08-30 | 2020-04-21 | 株式会社村田制作所 | Antenna module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549593U (en) * | 2009-10-22 | 2010-08-11 | 海宁胜百信息科技有限公司 | Double-polarization micro-strip array antenna |
| CN202817194U (en) * | 2012-03-30 | 2013-03-20 | 星动通讯科技（苏州）有限公司 | A wireless communication base station array antenna with wide frequency band, dual polarization, and low profile |
-
2012
- 2012-03-30 CN CN201210089475.3A patent/CN102610928B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549593U (en) * | 2009-10-22 | 2010-08-11 | 海宁胜百信息科技有限公司 | Double-polarization micro-strip array antenna |
| CN202817194U (en) * | 2012-03-30 | 2013-03-20 | 星动通讯科技（苏州）有限公司 | A wireless communication base station array antenna with wide frequency band, dual polarization, and low profile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816718A (en) * | 2017-01-20 | 2017-06-09 | 电子科技大学 | A kind of Sidelobe sharp cut-off flat-topped beam antenna for base station and method for designing |
| CN106816718B (en) * | 2017-01-20 | 2020-09-11 | 电子科技大学 | Low sidelobe sharp cutoff flat-top beam base station antenna and design method |
| CN111052509A (en) * | 2017-08-30 | 2020-04-21 | 株式会社村田制作所 | Antenna module |
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| CN102610928B (en) | 2016-05-11 |
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Address after: 215537 Room 601, 1 Chuang Chuang garden, 9 Sihai Road, Changshu economic and Technological Development Zone, Jiangsu. Patentee after: Tian Tong Sheng Bang communication technology (Suzhou) Co., Ltd. Address before: 215500 Fuhua Road 15, Changshou City economic and Technological Development Zone, Jiangsu Patentee before: Xingdong Communication Technology (Suzhou) Co., Ltd. |