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Circularly polarized folding transmission array

A circular polarization and radiation layer technology, applied in the fields of wireless communication, high-gain antenna, satellite communication, positioning and tracking, can solve the problems of bulky, high distance, difficult to achieve circular polarization, etc., achieve low profile and reduce feed source The effect of distance and low cost

Pending Publication Date: 2020-11-20
SOUTHEAST UNIV
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Problems solved by technology

[0006] Purpose of the invention: The purpose of the present invention is to solve the traditional transmission array, the distance between the feed source and the transmission array is too high, resulting in bulky volume; at the same time, most folded arrays are difficult to achieve circular polarization due to structural limitations, etc., to provide a circular polarization Folded transmission array, the folded transmission array is composed of a bottom metasurface, a feed source, and a top metasurface

Method used

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  • Circularly polarized folding transmission array

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Embodiment

[0032] Here we give the specific process of designing the x-band circularly polarized folded transmission array, and in the actual design process, it can be extended to a specific operating frequency range according to the application requirements.

[0033] 1 Top metasurface design

[0034] The top metasurface unit structure is as figure 2As shown in (a), it includes a metal radiation layer, a dielectric substrate, a metal backplane, a dielectric substrate, and a metal receiving layer from top to bottom. A hole is opened in the middle of the metal backplane so that the metal radiation layer and the metal receiving layer pass through the metal The hole form realizes electromagnetic energy coupling. Among them, the metal materials of the three layers of metal radiation layer, metal backplane and metal receiving layer are good conductors, such as copper, silver, gold, etc.; the materials of the two layers of dielectric substrates are low-loss dielectric materials, such as resin...

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Abstract

The invention discloses a circularly polarized folding transmission array, which comprises a bottom metasurface, a top metasurface and a feed source, wherein the bottom metasurface is integrated withthe feed source, the top metasurface is located on the upper portion, the distance between the top metasurface and the bottom metasurface is one third of the focal length of the transmission array, and compared with a traditional transmission array, the distance between the top metasurface and the bottom metasurface of the folding transmission array is one third of the focal length while circularly polarized waves can be achieved. According to the invention, the folding transmission array has the characteristics of low profile, simple design, planarization and the like, and has important application value in the aspect of high-gain low-profile antennas.

Description

technical field [0001] The invention belongs to the fields of high-gain antennas, wireless communications, satellite communications, and positioning and tracking, and in particular relates to a circularly polarized folded transmission array. Background technique [0002] As a high-gain antenna, the reflectarray antenna is widely used in the fields of satellite, radar, and mobile long-distance communication. The traditional reflectarray antenna consists of a feed source and a reflectarray. The reflectarray is mainly used to compensate the phase difference caused by the different propagation paths between the array unit and the feed source, and the feed source is mainly used to excite the entire array. The traditional reflectarray antenna is cumbersome and takes up a lot of space. The space in the thickness direction mainly depends on the feed source, the distance between the feed source and the main reflector array, and the size of the main reflector array. In the past, the ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q15/00
CPCH01Q1/38H01Q1/50H01Q15/0026H01Q15/0086
Inventor 程强杨进柯俊臣陈茂陈明正张琤杨瑞崔铁军
Owner SOUTHEAST UNIV
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