WO2020006805A1 - Source linéaire de réseau d'alimentation d'antennes à balayage électronique passives planes - Google Patents

Source linéaire de réseau d'alimentation d'antennes à balayage électronique passives planes Download PDF

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Publication number
WO2020006805A1
WO2020006805A1 PCT/CN2018/099166 CN2018099166W WO2020006805A1 WO 2020006805 A1 WO2020006805 A1 WO 2020006805A1 CN 2018099166 W CN2018099166 W CN 2018099166W WO 2020006805 A1 WO2020006805 A1 WO 2020006805A1
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WO
WIPO (PCT)
Prior art keywords
waveguide
phased array
line source
network line
flat
Prior art date
Application number
PCT/CN2018/099166
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English (en)
Chinese (zh)
Inventor
文忠
王丽君
毛天胜
沈佳骏
Original Assignee
成都赛康宇通科技有限公司
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
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Application filed by 成都赛康宇通科技有限公司 filed Critical 成都赛康宇通科技有限公司
Publication of WO2020006805A1 publication Critical patent/WO2020006805A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H01Q15/242—Polarisation converters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/165—Auxiliary devices for rotating the plane of polarisation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems

Definitions

  • the invention belongs to the technical field of phased array antenna feeding, in particular to a flat passive phased array feeding network line source.
  • the line source is a key component of the antenna, and its role is to provide a plane wave from the rectangular waveguide port for the antenna feed.
  • the first is a line excitation source composed of a horn antenna's reflected feed. Because of wave reflection, it can turn a spherical wave into a plane wave.
  • This line excitation source is relatively bulky.
  • a convex lens or a flat lens is used to convert a spherical wave from a horn antenna into a plane wave, and its linear excitation source is smaller and lighter than the first type.
  • convex lenses or flat lenses are difficult to machine with standard equipment, and adding a matching layer increases reflection losses.
  • the third type of line source is to use a waveguide power divider and a horn antenna to generate plane waves in a slab waveguide by means of wave synthesis.
  • the waveguide power divider uses T connectors that cascade multiple E-planes or H-planes. Compared to the H-plane power divider, the E-plane waveguide power divider is more suitable for symmetrical structures of the upper and lower structures, because it can cut the waveguide from the E-plane, which is more convenient for processing. In addition, since the E-plane cutting does not cut off the current, the signal leakage of the E-plane power divider is less.
  • the electric field component of the TE10 wave of the E-plane power divider is distributed along the main surface of the power divider and is parallel to the conductive layer of the plane waveguide, so it is orthogonal to the electric field component of the plane waveguide TEM wave. Therefore, the polarization of the electromagnetic wave of the E-plane power divider needs to be rotated by 90 ° to match the electromagnetic wave of the planar waveguide.
  • the existing polarization converter has a polarization rotator along the propagation direction, which has a long size (especially in the low frequency band). Due to the special shape, it cannot be processed by standard milling technology, which increases the The complexity of this line source design and manufacturing.
  • An object of the present invention is to provide a flat passive phased array feed network line source for the above problems.
  • a flat passive phased array feed network line source including a multi-port power divider connected in sequence, and multiple polarization conversions matching the number of power divider ports
  • the polarization converter is composed of an input-end waveguide and an output-end waveguide connected through a cavity, and a horizontally polarized wave enters the cavity through the input-end waveguide, and is rotated and polarized into a vertically polarized wave by Output waveguide output.
  • the power divider is an E-plane waveguide power divider
  • the input-end waveguide and the output-end waveguide are both rectangular waveguides
  • the input-end waveguide is orthogonal to the output-end waveguide.
  • the cavity is a butterfly cavity.
  • the power combiner includes a plurality of rectangular waveguides and a slab waveguide matching the number of the polarization converters, and converts a plurality of input TE 10 waves into quasi-TEM waves on the slab waveguide.
  • the input signals of the plurality of rectangular waveguides of the power combiner have the same phase, and the amplitude distribution of the rectangular waveguide requires that the middle port in the H plane is strong and the edge port is weak.
  • a plurality of rectangular waveguides of the power combiner are arranged along a certain slope.
  • the working frequency band of the invention is 26.5GHz ⁇ 31GHz.
  • the beneficial effects of the present invention are: because the polarization rotator is not required, the length of the polarization converter is greatly reduced and it is suitable for standard machining, making the structure of the line source compact; reducing signal leakage and increasing bandwidth; and making echoes
  • the loss is better than 20dB, which ensures a perfect feed signal for the flat passive phased array antenna.
  • FIG. 1 Block diagram of the line source of the flat passive phased array feed network
  • FIG. 1 Schematic diagram of the line source of the flat passive phased array feed network
  • FIG. 3 is a schematic structural diagram of a polarization converter according to the present invention.
  • a flat passive phased array feed network line source as shown in FIG. 1, includes a multi-port power divider connected in sequence, multiple polarization converters and power combiners matching the number of power divider ports.
  • the polarization converter is composed of an input-end waveguide and an output-end waveguide connected through a cavity.
  • a horizontally polarized wave enters the cavity through the input-end waveguide, and is rotated and polarized into a vertically-polarized wave by the output-end waveguide.
  • the wiring structure diagram of the line source of the flat passive phased array feeding network includes an E-plane waveguide eight-port power divider 6 connected in sequence, and eight E / H-plane polarization converter and H-plane waveguide power combiner.
  • the E / H surface polarization converter includes an input-end waveguide and an output-end waveguide connected through a butterfly cavity 1.
  • the E-plane is perpendicular to the H-plane.
  • the advantages of the E-plane and the H-plane waveguide are effectively used.
  • the eight-port power divider 6 is designed using the E-plane waveguide to reduce signal leakage and increase bandwidth.
  • the power combiner design uses H-plane waveguides to synthesize the electromagnetic waves of rectangular waveguides as parallel waveguides.
  • the number of ports from multiple H-plane waveguides to Transmission of parallel waveguides becomes easier, greatly reducing the size of the power combiner, and reducing the difficulty of designing and processing the power combiner.
  • the input and output ends of the E / H polarization converter consist of two rectangular waveguides orthogonally connected by a central butterfly cavity.
  • the horizontally polarized wave enters the butterfly cavity and is output after being polarized and rotated to vertical polarization.
  • the E / H polarization converter has a wide bandwidth.
  • the eight-port H-plane waveguide power combiner has eight rectangular waveguides of the same size, and each rectangular waveguide is connected to a slab waveguide.
  • the rectangular waveguides are aligned along a straight line.
  • the rectangular waveguide spacing and slab width can be adjusted to convert multiple TE 10 waves from the rectangular waveguide to quasi-TEM waves on the slab waveguide.
  • the input signals of the rectangular waveguides have the same phase, and the amplitude distribution requires the middle port of the H-plane to be strong, and the amplitude of the edge ports to be weak.
  • the return loss in the wide band of 26.5GHz ⁇ 31GHz is better than 20dB, which can provide a perfect feed signal for a flat passive phased array antenna.
  • Each part of the excitation source can be independently designed and optimized to obtain high bandwidth, and the excitation source can be formed by simply connecting these parts. Therefore, the design of the line source has been greatly simplified.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne une source linéaire de réseau d'alimentation d'antennes à balayage électronique passives planes, comprenant : un diviseur de puissance doté de multiples ports ; une pluralité de transformateurs de polarisation correspondant au diviseur de puissance en termes de nombre de ports ; et un synthétiseur de puissance connecté en séquence, le transformateur de polarisation étant composé d'un guide d'ondes d'extrémité d'entrée et d'un guide d'ondes d'extrémité de sortie reliés par une cavité, de telle sorte qu'une onde de polarisation horizontale pénètre dans la cavité par le guide d'ondes d'extrémité d'entrée, et est ensuite émise par le guide d'ondes d'extrémité de sortie à un guide d'ondes plan après avoir été polarisée circulairement en une onde de polarisation verticale. La présente invention ne nécessite pas de rotateur de polarisation, intègre les avantages d'un guide d'ondes plan E et d'un guide d'ondes plan H, et présente les caractéristiques d'une structure compacte, d'une grande largeur de bande, et d'être facile et pratique à concevoir et à fabriquer.
PCT/CN2018/099166 2018-07-03 2018-08-07 Source linéaire de réseau d'alimentation d'antennes à balayage électronique passives planes WO2020006805A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810715591.9 2018-07-03
CN201810715591.9A CN108899617A (zh) 2018-07-03 2018-07-03 一种平板无源相控阵馈电网络线源

Publications (1)

Publication Number Publication Date
WO2020006805A1 true WO2020006805A1 (fr) 2020-01-09

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PCT/CN2018/099166 WO2020006805A1 (fr) 2018-07-03 2018-08-07 Source linéaire de réseau d'alimentation d'antennes à balayage électronique passives planes

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CN (1) CN108899617A (fr)
WO (1) WO2020006805A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112018524B (zh) * 2020-07-09 2022-08-05 中国人民解放军战略支援部队信息工程大学 单端口输入任意n端口输出的victs馈电激励层设计方法

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CN102738585A (zh) * 2012-07-02 2012-10-17 中国电子科技集团公司第五十四研究所 一种收发共用双线极化波导阵列天线
WO2014158107A1 (fr) * 2013-03-29 2014-10-02 Haluk Kulah Procédé de décalage de phase pour matrices émettrices et matrices réflectrices reconfigurables et élément unitaire associé
CN104993253A (zh) * 2015-05-21 2015-10-21 中国电子科技集团公司第十研究所 有源相控阵天线射频链路系统及其确定收发隔离度的方法

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US3430247A (en) * 1967-09-05 1969-02-25 North American Rockwell Centerfed travelling wave array having a squinted aperture
US6075494A (en) * 1997-06-30 2000-06-13 Raytheon Company Compact, ultra-wideband, antenna feed architecture comprising a multistage, multilevel network of constant reflection-coefficient components
CN204538246U (zh) * 2015-01-22 2015-08-05 成都锦江电子系统工程有限公司 一种平面裂缝阵列天线
CN206451828U (zh) * 2016-12-29 2017-08-29 深圳超级数据链技术有限公司 平板波导天线的馈电结构
CN206412475U (zh) * 2017-01-05 2017-08-15 深圳超级数据链技术有限公司 馈电线源
CN108110436B (zh) * 2017-12-18 2024-02-06 江苏贝孚德通讯科技股份有限公司 波导馈电网络、波导阵列天线

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102738585A (zh) * 2012-07-02 2012-10-17 中国电子科技集团公司第五十四研究所 一种收发共用双线极化波导阵列天线
WO2014158107A1 (fr) * 2013-03-29 2014-10-02 Haluk Kulah Procédé de décalage de phase pour matrices émettrices et matrices réflectrices reconfigurables et élément unitaire associé
CN104993253A (zh) * 2015-05-21 2015-10-21 中国电子科技集团公司第十研究所 有源相控阵天线射频链路系统及其确定收发隔离度的方法

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