WO2012100582A1 - Unité de rayonnement à double polarisation et antenne large bande de station de base - Google Patents

Unité de rayonnement à double polarisation et antenne large bande de station de base Download PDF

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Publication number
WO2012100582A1
WO2012100582A1 PCT/CN2011/082316 CN2011082316W WO2012100582A1 WO 2012100582 A1 WO2012100582 A1 WO 2012100582A1 CN 2011082316 W CN2011082316 W CN 2011082316W WO 2012100582 A1 WO2012100582 A1 WO 2012100582A1
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WO
WIPO (PCT)
Prior art keywords
dual
vibrator
feed
vibrators
radiating element
Prior art date
Application number
PCT/CN2011/082316
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English (en)
Chinese (zh)
Inventor
刘良涛
余国鑫
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京信通信技术(广州)有限公司
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Application filed by 京信通信技术(广州)有限公司 filed Critical 京信通信技术(广州)有限公司
Publication of WO2012100582A1 publication Critical patent/WO2012100582A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction

Definitions

  • the invention relates to the field of mobile communication base station antennas, in particular to a dual-polarization radiation unit and a broadband base station antenna.
  • the frequency requirement of the broadband antenna required by the market is 790MHz-960MHz, the bandwidth is 19.4%, and the full-band standing wave ratio is required to be less than 1.40, and the two-port isolation requirement is greater than 30.
  • Such a wideband antenna has a wider bandwidth than conventional base station antennas, and the VSWR requirements of the antenna are also extremely strict, posing a high challenge in design difficulty.
  • the radiating element of the array antenna largely determines the multiple performances of the antenna, such as gain, voltage standing wave ratio bandwidth, beam width, beam convergence and cross polarization discrimination.
  • gain voltage standing wave ratio bandwidth
  • beam width beam width
  • beam convergence beam convergence and cross polarization discrimination.
  • the boundary conditions play a decisive role in the beam convergence and isolation of the dual-polarized antenna. Dual-polarized radiated oscillators also require good cross-polarization performance, and the isolation between the two polarizations also places high demands. Therefore, under the premise of designing high-performance radiation units, the choice of boundary conditions is also an important issue.
  • Another object of the present invention is to provide a broadband base station antenna having a simple structure, a high frequency bandwidth, and a high isolation.
  • a dual-polarized radiating element includes a metal reflective bottom plate and two pairs of vibrators mounted on the metal reflective bottom plate, and the vibrator arms of each pair of vibrators are parallel or in line with each other.
  • the vibrator arms between the two pairs of vibrators are perpendicular to each other, so that two mutually orthogonal electric fields of polarization directions can be transmitted or received.
  • the vibrator arms of the two pairs of vibrators are arranged in a square shape.
  • the vibrator arms of the pair of vibrators are parallel to the longitudinal direction of the metal reflective bottom plate, and the vibrator arms of the other pair of vibrators are perpendicular to the longitudinal direction of the metal reflective bottom plate to form a horizontal polarization and a vertical polarization dual polarization; or the two pairs The vibrator arms of the vibrator are at an angle of 45° to the longitudinal direction of the metal reflective bottom plate. A dual polarization of +45° polarization and -45° polarization is formed.
  • the vibrator arms of the two pairs of vibrators are arranged in a cross shape.
  • the vibrator arms of the two pairs of vibrators are arranged in a zigzag manner.
  • Feed cables on a pair of vibrators in the same polarization direction are connected in parallel.
  • the longitudinal edges of the two sides of the metal reflective bottom plate are respectively provided with side walls.
  • the vibrator is composed of a pair of vibrator arms, a pair of balanced feed connectors and a connection base, the two vibrator arms being respectively connected to one end of the balanced feed connector, and the other end of the balanced feed connector is
  • the connection base is connected, and the connection base is fixed on the metal reflective bottom plate.
  • the balanced feed connector is composed of a balanced feed plate and a feed connection portion, one end of the balanced feed plate is connected to the vibrator arm, the other end is connected to one end of the feed connection portion, and the other end of the feed connection portion is connected The base is connected.
  • the two balanced feed plates in the vibrator are parallel to each other, and the feed connection connected to the balanced feed plate is opened to the outside of the two parallel balanced feed plates, and then connected to the connection base.
  • one of the vibrator arms is bent upward from the inside to a feed piece that extends above the other vibrator arm.
  • the feed piece may have an L shape.
  • the feed piece is connected to an inner conductor of the feed cable, and the outer conductor of the feed cable is soldered to the vibrator arm below the end of the feed piece and the feed cable on the feed connection portion on the same side as the end of the feed piece. Department connection.
  • the end of the vibrator arm is first inclined downward relative to the horizontal plane and then the extreme end of the vibrator arm is again bent downward to form a bend parallel to the balanced feed plate.
  • the vibrator can be formed by an integral forming structure of sheet metal stamping and bending, which can greatly reduce the cost and make the assembly easier.
  • a broadband base station antenna is composed of a plurality of said dual-polarized radiating elements arranged in a linear arrangement.
  • the number of the dual polarized radiation units is three or more.
  • the metal plates are laterally mounted between the dual-polarized radiating elements, so that the isolation between the two polarizations of the antenna can be improved without affecting the directional performance.
  • the present invention has the following advantages: First, the special vibrator arm shape and the feeding mode of the vibrator are matched, and the integrated form of sheet metal stamping and bending is used, which greatly reduces the cost; secondly, the vibrator arm The unique shape, compared with the generally linear vibrator arm, increases the spacing between the vibrators, and also increases the spacing between the radiating elements, thereby reducing the design difficulty of the antenna isolation; the advantages of simple structure and high performance It is easy to manufacture and easy to install and use; it has wide bandwidth, high gain, good cross polarization ratio and good isolation performance.
  • Figure 1 is a perspective view of the vibrator of the present invention
  • Figure 2 is a front elevational view of the vibrator of the present invention
  • FIG. 3 is a perspective view of a dual polarized radiation unit according to the present invention.
  • Embodiment 4 is a perspective view of Embodiment 1 of a broadband dual-polarized base station antenna according to the present invention.
  • Embodiment 2 is a perspective view of Embodiment 2 of a broadband dual-polarization base station antenna according to the present invention.
  • Embodiment 6 is a perspective view of Embodiment 3 of a broadband dual-polarized base station antenna according to the present invention.
  • Embodiment 7 is a perspective view of Embodiment 4 of a broadband dual-polarized base station antenna according to the present invention.
  • Figure 8 is a graph showing the measured standing wave ratio of a polarized port voltage according to a specific embodiment of the present invention.
  • Figure 9 is a graph showing the measured standing wave ratio of a polarized port voltage according to a specific embodiment of the present invention.
  • Figure 10 is a graph of the isolation between two polarizations measured in accordance with an embodiment of the present invention.
  • a dual-polarized radiating element is an essential constituent unit of an array antenna.
  • the dual polarized radiation unit includes a metal reflective bottom plate 8 and two pairs of vibrators 10 mounted on the metal reflective bottom plate 8 and corresponding terminals.
  • the vibrator arms 4 of each pair of vibrators 10 are parallel to each other and have the same polarization direction; the vibrator arms 4 between the two pairs of vibrators 10 are perpendicular to each other.
  • the feed cables on each pair of vibrators 10 are connected in parallel to form a polarization.
  • the side edges 9 of the metal reflective bottom plate 8 are respectively provided with side walls 9.
  • the vibrator arm 4 of the vibrator 10 is at an angle of 45 degrees to the longitudinal direction of the metal reflective bottom plate 8, forming a double polarization of +45° polarization and -45° polarization, and the vibrator arms 4 of the two pairs of vibrators are arranged in a square shape. .
  • the vibrator 10 is composed of a pair of vibrator arms 4, a pair of balanced feed connectors and a connecting base 1; the two vibrator arms 4 are on the same straight line, respectively, and the balanced feed One end of the electrical connector is connected, and the other end of the balanced feed connector is connected to the connection base 1.
  • the balanced feed connector is composed of a balanced feed plate 3 and a feed connection portion 2, one end of the balanced feed plate 3 is connected to the vibrator arm 4, and the other end is connected to one end of the feed connection portion 2, and the feed connection portion The other end of 2 is connected to the connection base 1 to form a complete vibrator 10.
  • the two balanced feed plates 3 of the vibrator 10 are parallel to each other.
  • the feed connection 2 connected to the balanced feed plate 3 is flared to the outside of the two parallel balanced feed plates 3 and then to the connection base 1.
  • the vibrator 10 is fixed to the metal reflective bottom plate 8 via a connection base 1.
  • the balanced feed connector supports and fixes the vibrator 10 while feeding the radiating element.
  • the feeder connection 2, which is open to the outside of the balanced feed connector, is different from the balanced feeder which is usually about a quarter-wavelength upright, which can reduce the height of the antenna profile and increase the bottom space for connection.
  • the base 1 is fixed to the metal reflective bottom plate 8.
  • the feed piece 41 may have an L shape.
  • the feed piece 41 is a part of the vibrator arm 4, and is not a separate component, which can reduce the cost of the antenna and reduce the installation process, and the feeding cable does not have to be bent when soldering, thereby enhancing the reliability of the antenna.
  • the L-shaped feed piece 41 has an impedance matching function.
  • the end of the vibrator arm 4 is first inclined downward relative to the horizontal plane (which may be 135° from the horizontal plane), and then the end of the vibrator arm 4 is further bent downward to form a bent portion parallel to the balanced feed plate 2 5.
  • the unique shape of the vibrator arm 4 increases the spacing between the vibrators compared to the generally linear vibrator arms, and also increases the spacing between the radiating elements, thereby reducing the design difficulty of the antenna isolation;
  • the cross-polarization ratio performance index, combined with the L-shaped feed portion, can design a base station antenna with broadband radiation characteristics.
  • the feed piece 41 is connected to the inner conductor 6 of the feed cable, the outer conductor of the feed cable and the vibrator arm 4 below the end of the feed piece 41 and the feed on the feed connection 2 on the same side as the end of the feed piece 41
  • the electric cable soldering portion 71 is connected.
  • the feed cables of the two polarizers 10 of the same polarization are connected in parallel through the terminals.
  • the vibrator 10 described above can be integrally formed with a sheet metal stamping and bending, which can greatly reduce the cost and make the assembly easier.
  • the vibrator arms 4 of the two pairs of vibrators 10 are arranged in a square shape, wherein the vibrator arms 4 of the pair of vibrators 10 are parallel to the longitudinal direction of the metal reflective bottom plate 8, and the vibrator arms 4 of the other pair of vibrators 10 are perpendicular to the longitudinal direction of the metal reflective bottom plate 8, A set of horizontally polarized and vertically polarized dual polarized radiating elements is formed.
  • each pair of vibrator arms 4 of the vibrator 10 mounted on the metal reflective bottom plate 8 are on the same straight line, that is, arranged in a line; the vibrator arms 4 between the two pairs of vibrators 10 are perpendicular to each other. Glyph arrangement.
  • the vibrator arm 4 of each pair of vibrators 10 may be at an angle of 45° to the longitudinal direction of the metal reflective bottom plate 8; or a pair of vibrators 10
  • the vibrator arms 4 are parallel to the longitudinal direction of the metal reflective bottom plate 8, and the vibrator arms 4 of the other pair of vibrators 10 are perpendicular to the longitudinal direction of the metal reflective bottom plate 8, forming a set of polarized radiation of +45° polarization and -45° polarization. unit.
  • two pairs of vibrator arms 4 of the vibrator 10 mounted on the metal reflective bottom plate 8 are arranged in a zigzag pattern.
  • the vibrator arm 4 of each vibrator 10 is shown at an angle of 45° to the longitudinal direction of the metal reflective bottom plate 8, forming a set of dual-polarized radiating elements of +45° polarization and -45° polarization.
  • Such an arrangement can increase the gap between the radiating elements.
  • the vibrators are arranged on the metal reflective bottom plate 8 to form a complete dual-polarized radiating element 12.
  • a broadband dual-polarized base station antenna is composed of a plurality of said dual-polarized radiating elements 12 arranged in a linear sequence.
  • the number of linearly arranged dual-polarized radiating elements 12 is 3, 4, 5, 6, 7, 8, 9, or more than nine.
  • the plurality of dual-polarized radiating elements 12 are linearly arranged in sequence to form a complete broadband dual-polarized base station antenna.
  • the metal piece 13 is laterally mounted between the polarized radiation units, so that the isolation between the two polarizations of the antenna can be improved without affecting the performance of the pattern.
  • the dual-polarized radiating elements can be mounted together on the same metal reflective bottom plate 8, and the side walls 9 are mounted on the longitudinal edges of the metal reflective bottom plate 8.
  • the broadband dual-polarized base station antenna made by the dual-polarized radiating unit described in Embodiment 1 has a good frequency band in the whole frequency band: the frequency band of 790-960 MHz, and the voltage standing wave ratio is less than 1.4.
  • the isolation is greater than 33dB, and the measured gain of the 5-cell is between 14.5dBi and 15.5dBi.
  • the horizontal plane 3dB beamwidth is 61 degrees to 70 degrees, and the spindle cross polarization ratio is greater than 20dB.
  • the cross polarization ratio is greater than 10 dB.
  • the environmental test is qualified and can meet the requirements of the mobile communication system.
  • the invention has the advantages of simple and compact structure and high performance, is easy to manufacture, and is convenient to install and use; and has wider bandwidth, higher gain, cross polarization ratio and compared with the main forms of the current similar products. Good isolation performance.
  • the broadband dual-polarized base station antennas fabricated by the dual-polarized radiating elements described in Embodiment 2, Embodiment 3, and Embodiment 4 also have the above-described performance and characteristics.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

La présente invention concerne une unité de rayonnement à double polarisation, comprenant une plaque de base métallique réfléchissante et deux paires de vibreurs agencés sur la plaque de base métallique réfléchissante ; les bras de vibreur de chaque paire de vibreurs sont parallèles ou alignés entre eux et les bras de vibreur d'une paire de vibreurs sont perpendiculaires aux bras de vibreur de l'autre paire. L'invention concerne en outre une antenne large bande de station de base à double polarisation formée d'un agencement linéaire d'une pluralité d'unités de rayonnement à double polarisation. L'invention présente les avantages suivants : réduction importante du coût du fait de l'adaptation de la forme des bras de vibreur au mode d'alimentation des vibreurs et de l'utilisation d'une combinaison d'emboutissage et de pliage de tôles ; augmentation de la distance entre vibreurs et augmentation simultanée de la distance entre unités de rayonnement de sorte à réduire la difficulté de conception du degré d'isolation de l'antenne ; obtention d'une structure simple et compacte, haute performance, facilité de fabrication, pose et utilisation pratiques, grande largeur de bande, gain élevé, bon taux de polarisation croisée et bonne performance d'isolation.
PCT/CN2011/082316 2011-01-28 2011-11-17 Unité de rayonnement à double polarisation et antenne large bande de station de base WO2012100582A1 (fr)

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Application Number Priority Date Filing Date Title
CN 201110031157 CN102176536A (zh) 2011-01-28 2011-01-28 一种双极化辐射单元及宽频基站天线
CN201110031157.7 2011-01-28

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WO2012100582A1 true WO2012100582A1 (fr) 2012-08-02

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CN107171063A (zh) * 2017-06-07 2017-09-15 江苏华灿电讯股份有限公司 一种三端口双频天线
CN107508036A (zh) * 2017-08-25 2017-12-22 苏州市吴通天线有限公司 一种5g一体化弹片天线
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CN110034372A (zh) * 2019-05-13 2019-07-19 中国科学院国家天文台 一种平面弯折十字交叉型宽带双极化蝶形振子
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EP3979413A4 (fr) * 2019-09-09 2023-01-25 Rosenberger Technologies Co., Ltd. Élément d'antenne miniaturisé à gain élevé et antenne
CN117080721A (zh) * 2023-08-11 2023-11-17 佛山市迪安通讯设备有限公司 单极化辐射单元、空气微带辐射单元和壁挂天线

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CN101465474A (zh) * 2007-12-21 2009-06-24 阿尔卡特朗讯 用于蜂窝基站天线的双极化辐射元件
WO2010033004A2 (fr) * 2008-09-22 2010-03-25 주식회사 케이엠더블유 Antenne bifréquence à double polarisation pour station de base de communication mobile
CN102176536A (zh) * 2011-01-28 2011-09-07 京信通信技术(广州)有限公司 一种双极化辐射单元及宽频基站天线

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CN107171063A (zh) * 2017-06-07 2017-09-15 江苏华灿电讯股份有限公司 一种三端口双频天线
CN107508036A (zh) * 2017-08-25 2017-12-22 苏州市吴通天线有限公司 一种5g一体化弹片天线
CN107508036B (zh) * 2017-08-25 2023-11-17 江苏吴通物联科技有限公司 一种5g一体化弹片天线
CN108161326A (zh) * 2017-11-17 2018-06-15 江苏亚信电子科技有限公司 一种振子焊线***
CN110034372A (zh) * 2019-05-13 2019-07-19 中国科学院国家天文台 一种平面弯折十字交叉型宽带双极化蝶形振子
EP3979413A4 (fr) * 2019-09-09 2023-01-25 Rosenberger Technologies Co., Ltd. Élément d'antenne miniaturisé à gain élevé et antenne
CN110943306A (zh) * 2019-12-27 2020-03-31 昆山瀚德通信科技有限公司 一种单极化天线
CN110943306B (zh) * 2019-12-27 2024-05-24 昆山瀚德通信科技有限公司 一种单极化天线
CN111934087A (zh) * 2020-08-03 2020-11-13 深圳市普方众智精工科技有限公司 宽带双极化菱形振子单元及线性阵列天线
CN112821032A (zh) * 2021-02-03 2021-05-18 深圳航天东方红卫星有限公司 一种星载可折展八木天线振子固定装置
CN113871848A (zh) * 2021-08-09 2021-12-31 上海航天测控通信研究所 一种星载高增益宽频带小型化复合天线
CN117080721A (zh) * 2023-08-11 2023-11-17 佛山市迪安通讯设备有限公司 单极化辐射单元、空气微带辐射单元和壁挂天线

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