Low-profile broadband dual-circularly-polarized phased-array antenna system

A phased array antenna and dual circular polarization technology, applied in specific array feeding system, antenna, antenna coupling and other directions, to achieve low profile, improve transmission efficiency, and reduce impact

Pending Publication Date: 2021-10-19
成都华芯天微科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing problems of circularly polarized antennas in the prior art, and to provide a low profile broadband dual circularly polarized phased array antenna system

Method used

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  • Low-profile broadband dual-circularly-polarized phased-array antenna system
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  • Low-profile broadband dual-circularly-polarized phased-array antenna system

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Embodiment 1

[0045] In an exemplary embodiment, a low profile broadband dual circularly polarized phased array antenna system is provided, such as figure 1 , 2 As shown, the system includes:

[0046] The antenna array 1 includes a plurality of antenna units 11, the antenna unit 11 includes a dielectric layer 112 and a radiation layer 111, the dielectric layer 112 is provided with a 90 ° bridge; the radiation layer 111 is provided with a double feed point 114, The double feed point 114 is connected to the 90° electric bridge through the feeder;

[0047] A radio frequency module 2, the radio frequency module 2 is a tile-type radio frequency module, the radio frequency module 2 includes a plurality of radio frequency channels 21 correspondingly connected to the antenna unit 11, and the radio frequency channel 21 is plug-in connected to the antenna unit 11 ;as well as

[0048] A control module 3 for controlling the switching of transceivers and polarization selection of the radio frequency ...

Embodiment 2

[0057] Based on Embodiment 1, a low profile broadband dual circularly polarized phased array antenna system is provided, wherein the antenna unit 11 adopts a multi-layer mixed-voltage microstrip structure. Specifically, such as figure 2 As shown, the antenna radiating layer 111 is connected to the bridge layer 90 in the dielectric layer 112 through inter-board interconnection, and multi-layer board hybrid technology may be used, or the connector 113 may be used for interconnection.

[0058] Further, the double feed point 114 includes two feed points with a phase difference of 90° or −90°. like image 3 As shown, the double feeding point 114 feeds signals with a phase difference of 90 degrees to form left-handed circular polarization; the double feeding point 114 feeds signals with a phase difference of -90 degrees to form right-handed circular polarization.

[0059] Furthermore, in order to improve the isolation between polarizations and form circular polarization, the two ...

Embodiment 3

[0063] Based on the above embodiments, a low profile broadband dual circularly polarized phased array antenna system is provided. The radio frequency channel 21 includes a left-handed channel and a right-handed channel, a left-handed T / R assembly is provided in the left-handed channel, a right-handed T / R assembly is provided in the right-handed channel, and the left-handed T / R assembly is connected to the double feed One of the feed points 114, the right-handed T / R component is connected to the other feed point of the double feed points 114.

[0064] Specifically, such as Image 6 As shown, the left-handed T / R assembly corresponds to the left-handed channel, and the right-handed T / R assembly corresponds to the right-handed channel. Antenna unit 11 is provided with a left-handed interface and a right-handed interface. The left-handed interface is connected to a feed point, and the right-handed interface is connected to another A feed point is connected, the left-handed channel...

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Abstract

The invention discloses a low-profile broadband dual-circularly-polarized phased-array antenna system, which belongs to the field of antennae, and comprises an antenna array, a radio frequency module and a control module; the antenna array comprises a plurality of antenna units, each antenna unit comprises a dielectric layer and a radiation layer, and a 90-degree bridge is arranged in each dielectric layer; double feeding points are arranged on the radiation layer and are connected with the 90-degree bridge through feeder lines; the radio frequency module is a tile type radio frequency module, and the radio frequency module comprises a plurality of radio frequency channels correspondingly connected with the antenna units; and the control module is used for controlling transceiving switching and polarization selection of the radio frequency module. The tile type radio frequency module is adopted, the connection structure is simple, and cost increase and system loss increase caused by a complex inter-board interconnection mode are avoided; the array is rotated to optimize the axial ratio characteristic; and the 90-degree bridge improves polarization isolation of the antennas when the left-hand circular polarization and the right-hand circular polarization are implemented at the same time, the influence between the two kinds of polarization is reduced, and the formed phased array antenna system is high in integration level, low in profile and low in loss.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a low profile wideband dual circularly polarized phased array antenna system. Background technique [0002] The future air-space-ground integrated network puts forward the application requirements for data transmission terminals to seamlessly switch between multi-track, multi-satellite, and satellite-ground coverage areas. In order to ensure the quality of signal transmission, higher requirements are placed on the performance of antennas that directly affect the capabilities of the entire system. Issues such as channel capacity, channel fading, and multipath attenuation must be fully considered. The performance of circularly polarized antennas is generally better than that of linearly polarized antennas. Antennas, and dual circularly polarized antennas that can simultaneously achieve left-handed circular polarization and right-handed circular polarization are the focus of research. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q15/24H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/50H01Q1/52H01Q15/24H01Q21/0006H01Q21/061
Inventor 谢照川郑轶汪渊凌谦邱忠云易亮
Owner 成都华芯天微科技有限公司
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