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Broadband circular polarization common-aperture communication navigation array antenna

An array antenna and circular polarization technology, which is applied in the field of communication and navigation, can solve the problems of difficult antenna design, complicated program coordination, inter-frequency mutual coupling interference, etc., and achieve broadband impedance matching characteristics, compact structure, and inter-frequency Effect of Mutual Coupling Reduction

Active Publication Date: 2019-04-16
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The navigation antenna and the communication antenna on the existing mobile communication platform are independently designed and assembled, and the size and weight are large, the manufacturing cost is high, and the program coordination is complicated. The integrated design of the navigation antenna and the communication antenna can save space, reduce weight and cost, but the antenna The common-aperture design will bring inter-frequency mutual coupling interference, and the existing antenna settings are difficult to ensure the common-aperture design while taking into account the performance requirements of broadband circular polarization and high gain, as well as the structural requirements of low profile and high integration

Method used

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  • Broadband circular polarization common-aperture communication navigation array antenna
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  • Broadband circular polarization common-aperture communication navigation array antenna

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Embodiment 1

[0027] Such as figure 1 as shown, figure 1 It is the array layout diagram of the broadband circular polarization co-aperture communication navigation array antenna of the present invention; the broadband circular polarization co-aperture communication navigation array antenna of the present invention comprises 4 antenna sub-arrays 3 of 2x2 rectangular layout, and the antenna sub-array 3, each includes an L-band bent cross antenna unit 1 and four S-band circular microstrip patch antenna units 2; wherein the four S-band circular microstrip patch antenna units 2 are symmetrically arranged on the The four diagonal corners of the antenna sub-array 3, preferably, each of the S-band circular microstrip patch antenna units 2 are respectively arranged around the central axis of the antenna sub-array 3 and rotated clockwise by 90° sequentially, To improve the antenna array axial ratio performance of the S-band circular microstrip patch antenna unit; Specifically; each of the S-band cir...

Embodiment 2

[0038] In this embodiment, the working frequency of the wideband circularly polarized co-aperture communication navigation array antenna of the present invention is located in the L-band (1.1GHz-1.7GHz) covering the Beidou navigation frequency band and the commonly used communication frequency band S-band (1.8GHz-2.5GHz) . The navigation antenna is the L-band bent cross dipole antenna unit 1, which is fed by a broadband four-feed point microstrip network, and the feed port is coaxially connected to the digital channel. The communication antenna, that is, the S-band circular microstrip patch antenna unit 2 is fed by a broadband two-feed point microstrip network, and the feed port is coaxially connected to the T / R component.

[0039] The software Ansys HFSS is used to perform electromagnetic full-wave simulation and optimization of this embodiment. The radius of the radiation patch 21 is set to 25 mm, the distance between the feed metal cylinder and the center of the radiation ...

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Abstract

The invention discloses a broadband circular polarization common-aperture communication navigation array antenna, which comprises antenna sub-arrays arranged in a rectangular manner, and each antennasub-array comprises an L-waveband bent cross oscillator antenna unit and four S-waveband circular microstrip patch antenna units; the four S-band circular microstrip patch antenna units are symmetrically arranged at the four opposite angles of the antenna sub-array; the L-waveband bent cross oscillator antenna unit is located at the center of the antenna sub-array. The antenna is compact in structure; the L-waveband bent cross oscillator structure and the S-waveband circular microstrip patch structures are ingeniously integrated together; on the basis that excellent axial ratio performance isguaranteed, high-order mode resonance influence caused by a complex coupling topological structure is restrained, mutual coupling between two different wave band antennas is weakened, and the antennahas the advantages of being wide in frequency band, light in weight, easy to machine and low in cost.

Description

technical field [0001] The invention relates to the technical field of communication and navigation, in particular to a broadband circular polarization common-aperture communication and navigation array antenna. Background technique [0002] The common-aperture low-profile antenna has the characteristics of compact structure, high space utilization, and light weight. It can independently transmit and receive multi-frequency and multi-polarization signals at the same time, and integrate communication and navigation functions in a limited space at the same time, matching the high-performance mobile platform communication system; The circular polarization technology of the antenna has the advantages of anti-multipath interference and anti-rain and fog, and is easy to polarize matching; broadband communication technology can increase the transmission rate, increase the amount of data interaction, and provide flexible degrees of freedom; The guarantee of transmission and wide-are...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q21/00H01Q21/06H01Q21/20H01Q21/30
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q1/521H01Q21/0006H01Q21/0075H01Q21/065H01Q21/20H01Q21/30
Inventor 郑雨阳张正宇周家喜汪伟陈明彭立军
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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