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High isolation low cross polarization dual-polarization microstrip array antenna

A microstrip array and dual-polarization technology, applied in antennas, antenna coupling, antenna arrays, etc., can solve the problems of port isolation and cross-polarization level deterioration, and improve port-to-port isolation and cross-polarization levels The effect of leveling, broadening the impedance bandwidth, and high antenna gain

Pending Publication Date: 2018-11-09
湖南国科锐承电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the antenna array is formed, the port isolation and cross-polarization level will be further deteriorated due to the mutual coupling between the radiating elements, the coupling between the feeding networks and the spurious radiation.

Method used

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  • High isolation low cross polarization dual-polarization microstrip array antenna
  • High isolation low cross polarization dual-polarization microstrip array antenna
  • High isolation low cross polarization dual-polarization microstrip array antenna

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Embodiment Construction

[0015] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] figure 1 It is a schematic diagram of the overall structure of the present invention, figure 2 for figure 1 The top view (a) and side view (b) of an element array antenna in the dotted box shown in , image 3 It is a top view of the feeding layer of the present invention.

[0017] As can be seen from the figure, the high-isolation low cross-polarization dual-polarization microstrip array antenna provided by the present invention includes a radiation layer 1, a parasitic layer 2, a feeding layer 3, and a dielectric layer between the radiation layer 1 and the parasitic layer 2 4 and the fixing part 5. The radiation layer includes four radiation patches 11 and a first dielectric board 12, the parasitic layer includes four parasitic patches 21 and a second dielectric board 22, and the feeding layer 3 includes a first feeding part 31, a second f...

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Abstract

The invention relates to the technical field of an antenna and particularly relates to a high isolation low cross polarization dual-polarization microstrip array antenna. The microstrip array antennacomprises a parasitic layer, a radiation layer, a dielectric layer between the parasitic layer and the radiation layer, a feeding layer and a fixing member. The microstrip array antenna is advantagedin that a high dielectric constant substrate and an H-shaped gap coupling structure are employed to improve feeding coupling efficiency, the gap size is reduced, inter-port isolation and the cross polarization level are improved, a parasitic patch is introduced to broaden impedance bandwidth of the antenna, the higher antenna gain is obtained through the 2*2 array structure, through designing therelatively sparse parallel feed network and arranging metal through holes in dense feeders, mutual coupling between the feeders is reduced, inter-port isolation is further improved, and the cross polarization level is reduced.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a high-isolation low-cross-polarization dual-polarization microstrip array antenna. Background technique [0002] In recent years, due to the increasing consumption of spectrum resources and the continuous improvement of communication density, single-polarized antennas can no longer fully meet the needs of modern communications in terms of spectrum utilization and anti-interference, so dual-polarized antennas have emerged as the times require. The dual-polarized antenna can provide two orthogonal linearly polarized or circularly polarized waves, realize frequency multiplexing through polarization diversity, improve frequency utilization and communication system capacity; improve anti-interference ability through polarization switching, and target Scattering characteristics, signal propagation characteristics, and antenna transmission and reception characteristics are all related...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q21/06H01Q21/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q1/523H01Q21/0006H01Q21/065
Inventor 杨虎姜南朱江杨军王新建姜欣
Owner 湖南国科锐承电子科技有限公司
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