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High-gain dual-band circularly polarized duplex antenna unit

An antenna unit and circular polarization technology, applied in independent antenna unit combinations, antennas, antenna arrays, etc., can solve the problems of large size, heavy weight, large loss of dielectric-based antennas and duplexers, etc.

Active Publication Date: 2021-07-30
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 traditional wideband antenna terminated with a duplexer has relatively large defects, the dielectric base antenna and duplexer have relatively large losses, and the wideband horn antenna or open waveguide terminated with a duplexer has the defects of large size and heavy weight

Method used

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  • High-gain dual-band circularly polarized duplex antenna unit
  • High-gain dual-band circularly polarized duplex antenna unit
  • High-gain dual-band circularly polarized duplex antenna unit

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Embodiment 1

[0034] refer to figure 1 , figure 2 , figure 1 A schematic diagram of a three-dimensional structure of a high-gain dual-band circularly polarized duplex antenna unit provided by an embodiment of the present invention, figure 2 A top view of a high-gain dual-band circularly polarized duplex antenna unit provided in an embodiment of the present invention, the high-gain dual-band circularly polarized duplex antenna unit includes:

[0035] High-frequency circularly polarized filter antenna 1, the high-frequency circularly polarized filter antenna 1 for receiving is realized by an array composed of 4×4 high-frequency circularly polarized open waveguides 2 with triangular cross-sections;

[0036] The low-frequency band filter antenna 7 for transmitting is set in the same aperture as the high-frequency band circularly polarized filter antenna 1, and the low-frequency band circularly polarized filter antenna 7 for transmission is composed of 2×2 low-frequency band circular poles w...

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Abstract

The invention relates to a high-gain dual-band circularly-polarized duplex antenna unit, which comprises a high-band circularly-polarized filtering antenna which comprises an array formed by high-band circularly-polarized open waveguides; and a low-band circularly polarized filtering antenna for transmitting which comprises an array formed by low-band circularly polarized open waveguides, wherein the low-band circularly polarized filtering antenna and the high-band circularly polarized filtering antenna are arranged in the same caliber. According to the invention, the receiving antenna and the transmitting antenna are separated to replace a traditional receiving / transmitting common broadband antenna, so that the design difficulty is reduced, and the respective antennas work in the optimal state; the transmitting low-band filtering antenna and the high-band circularly polarized filtering antenna are arranged in the same caliber, open waveguides are selected to share the caliber, metal wall sharing design is facilitated, the heights of multiple layers of cavities are the same, and aluminum alloy materials can be conveniently machined through mechanical milling and welding technologies.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a high-gain dual-band circularly polarized duplex antenna unit. Background technique [0002] Antenna is an essential device in a radio system, and there are various forms of antenna implementation. Antennas are divided according to the polarization mode of work. There are mainly two types of linear polarization and circular polarization. Among them, linear polarization includes horizontal polarization, vertical polarization and oblique polarization, etc., while circular polarization mainly includes left-handed circular polarization and There are two kinds of right-handed circular polarization. Circularly polarized antennas have the advantages of anti-multipath and easy polarization matching, and are widely used in satellite communications, weather radar, electronic reconnaissance and countermeasures. In circularly polarized antennas for satellite communications and data trans...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q21/06H01Q21/28H01Q21/30H01Q1/50H01Q13/06H01Q15/00
CPCH01Q21/28H01Q15/0053H01Q13/06H01Q21/061H01Q21/0006H01Q21/30H01Q1/50Y02A90/10
Inventor 汪伟杨志坚王烁郑雨阳方小川郑治陈明张洪涛邹永庆
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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