Dual-band broadband circularly-polarized common-aperture antenna

A circular polarization and common-aperture technology, applied in antennas, antenna arrays, antenna grounding devices, etc., to achieve the effects of easy processing, low profile, good feeding performance and radiation performance

Active Publication Date: 2019-07-02
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

However, the antennas in the prior art cannot solve the problem of realizing the sharing of transmission and reception on the basis of simple structure and low mutual influence between high and low frequencies, and at the same time taking into account the work of linear polarization.

Method used

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  • Dual-band broadband circularly-polarized common-aperture antenna
  • Dual-band broadband circularly-polarized common-aperture antenna
  • Dual-band broadband circularly-polarized common-aperture antenna

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Embodiment 2

[0045] This embodiment is UHF and L dual-band broadband circularly polarized co-aperture antenna (UHF, Ultra High Frequency, UHF), and the overall structure of this embodiment is as follows figure 1 and figure 2 shown. corresponds to image 3 As shown, the width W between the four radiators 1 in the UHF band distributed symmetrically Gap set to 40.0mm, the length L of the floor 6 GND Set to 1140mm.

[0046] Such as Figure 4 As shown, the width W of the two feed arms 2 F Set to 34.0mm, the horizontal length L of the single feed arm 2 F1 Set to 230.0mm, the vertical length L of the connecting end F2 Set to 105.0mm, the vertical length L of the disconnected end F3 It is set to 80.0mm, and at the overlapping position, the two corresponding bending grooves on the feeder arm 2 are offset upwards and downwards by 3.0mm respectively.

[0047] Such as Figure 5 and Figure 6 As shown, the length L of the metal block 11 in the radiator 1 b1 Set to 80.0mm, height H b1 Set ...

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Abstract

The invention discloses a dual-band broadband circularly-polarized common-aperture antenna, comprising a magneto-electric dipole antenna unit and a microstrip antenna unit. The magneto-electric dipoleantenna comprises a plurality of radiators, a feed arm and a floor, wherein the radiators and the feed arm are disposed on the floor, each radiator comprises a support frame connected to the floor and a horizontal electric dipole radiation patch connected to the support frame, and the radiators are rotationally symmetric about an origin point which is the center point of the dual-band broadband circularly-polarized common-aperture antenna. The microstrip antenna unit comprises a microstrip antenna array and a feed network, wherein the microstrip antenna array comprises a dielectric substrate,a feed group, a main radiation patch, and parasitic patches arranged around the main radiation patch, and the feed group, the main radiation patch and the parasitic patches are all disposed on the dielectric substrate. The dual-band broadband circularly-polarized common-aperture antenna combines the magneto-electric dipole antenna and the microstrip patch antenna, and is simple in structure and high in work efficiency.

Description

technical field [0001] The invention relates to the technical field of antenna equipment, in particular to a dual-band broadband circularly polarized common-aperture antenna. Background technique [0002] The rapid development of satellite communications puts forward higher requirements for antenna systems: multi-band, multi-polarization, broadband, miniaturization, etc. The common-aperture antenna can rationally design multiple antennas with different frequency and polarization characteristics in the same aperture. While keeping the antenna structure compact, it also has the performance of multi-frequency and multi-polarization work, which is the future development trend of satellite communication antennas. [0003] In the field of satellite communications, circularly polarized antennas have been widely used due to their strong anti-multipath reflection capabilities. In the commercial satellite communication system, the signals received and transmitted by the satellite are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q5/20H01Q21/06
CPCH01Q1/38H01Q1/48H01Q1/50H01Q21/065H01Q5/20
Inventor 孙桂林饶玉如张洪涛汪伟
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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