Circularly polarized antenna unit and antenna array

A technology of circularly polarized antenna and antenna unit, which is applied in the direction of separately powered antenna array, slot antenna, radiating element structure, etc., can solve the problems of narrow bandwidth, low gain, low operating frequency, etc. The effect of specific bandwidth and radiation energy concentration

Active Publication Date: 2021-11-02
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

At present, microwave and millimeter wave passive and active devices using hexagonal cavity structures generally have the problems of low operating frequency, narrow bandwidth, and low gain.

Method used

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  • Circularly polarized antenna unit and antenna array
  • Circularly polarized antenna unit and antenna array
  • Circularly polarized antenna unit and antenna array

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Embodiment Construction

[0035] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the specific embodiments and the accompanying drawings.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the usual meanings understood by those with ordinary skill in the art to which the present disclosure belongs. "First", "second" and similar words used in the embodiments of the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. "Comprises" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things. Words like "connected" or "connected" are not limi...

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Abstract

The invention provides a circularly polarized antenna unit and an antenna array. The circularly polarized antenna unit comprises a metal ground, and a first dielectric plate, a second dielectric plate and a third dielectric plate which are sequentially stacked on the metal ground, wherein the third dielectric plate is provided with four rectangular radiation patches and a plurality of metal columns, and the plurality of metal columns are distributed in a shape like a Chinese character 'tian' to form four rectangular back cavities in one-to-one correspondence with the four rectangular radiation patches; four coupling gaps are formed in the upper surface of the second dielectric plate, and the four coupling gaps are in one-to-one correspondence with the four rectangular radiation patches; a hexagonal cavity formed by metal columns is also arranged in the second dielectric plate, and four metal matching columns are arranged in the hexagonal cavity; and a feed transverse slit is formed in the upper surface of the first dielectric plate, and the first dielectric plate is also internally provided with a first SIW feed structure composed of metal columns. The circularly polarized antenna unit employs the hexagonal cavity structure, can reduce the size of a microwave and millimeter wave antenna, increases the working bandwidth, and improves the antenna gain.

Description

technical field [0001] The present disclosure relates to the technical field of millimeter wave antenna design in wireless communication technology, and in particular, to a circularly polarized antenna unit and an antenna array. Background technique [0002] With the rapid development of wireless communication technology, circularly polarized antennas have been paid more and more attention. Compared with linearly polarized antennas, the advantages of circularly polarized antennas are that they can overcome multipath interference and have better polarization efficiency, which can ensure that in complex electromagnetic In addition to target detection and communication in the environment, circularly polarized antennas also have polarization rotation and handed orthogonality. These advantages make circularly polarized antennas shine in wireless communication systems. At present, microwave and millimeter-wave passive and active devices using hexagonal cavity structure generally h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q21/20H01Q13/10
CPCH01Q1/38H01Q21/20H01Q13/10
Inventor 李秀萍朱跃方齐紫航陈淼
Owner BEIJING UNIV OF POSTS & TELECOMM
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