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Super surface-based waveguide slot frequency scanning antenna

A frequency scanning antenna and waveguide slot technology, applied in leaky waveguide antennas, antennas, antenna arrays, etc., can solve the problem of narrow application range and achieve the effect of expanding the application range

Active Publication Date: 2016-11-09
XIDIAN UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and propose a waveguide slot frequency scanning antenna based on metasurfaces, which utilizes the angular dispersion characteristics of metasurface transmitted electromagnetic waves to realize waveguide slot antennas within a narrow frequency band in the waveguide traveling wave direction The wide-angle beam scanning of the existing waveguide slot antenna is used to solve the technical problem of narrow application range caused by the difficulty of realizing wide-angle frequency scanning in a narrow frequency band because the antenna beam is directed in the waveguide traveling wave direction

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] refer to figure 1 , the present invention includes a rectangular waveguide 1, a waveguide radiator 2 and a metasurface 3, wherein the rectangular waveguide 1 and the waveguide radiator 2 are made of light, smooth metal materials with good electrical conductivity. The narrow side on one side of the rectangular waveguide 1 is an open structure, and its structure is as follows figure 2 As shown, it is used to feed the metasurface 3; in the extension direction of the two broad sides on one side of the open structure of the rectangular waveguide 1, a metal plate is connected respectively, and the two metal plates are parallel to form a waveguide radiator 2 , the waveguide radiator 2 length L=L 1 +L 2 +L 3 =121mm, width W 3 =15mm, the distance between parallel metal plates h=7.9mm; on one side of the open structure of the rectangular waveguide 1,...

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Abstract

The invention provides a super surface-based waveguide slot frequency scanning antenna, aims at solving the technical problem that an existing waveguide slot antenna cannot easily achieve wide-angle frequency scanning in a narrow band in a waveguide traveling wave direction to cause a narrow application range due to the pointing direction of an antenna beam. The super surface-based waveguide slot frequency scanning antenna comprises a rectangular waveguide, a waveguide radiator and a super surface, wherein the rectangular waveguide is formed by sequentially connecting a feeding connector, a first rectangular waveguide, a graded gradient rectangular waveguide and a second rectangular waveguide and a single-sided narrow side of the rectangular waveguide is of an open structure; the waveguide radiator comprising two parallel metal plates is connected in the extension directions of two wide sides of one side of the open structure; the super surface is embedded into one side of the open structure of the rectangular waveguide and comprises a dielectric plate and a metal patch printed on the surface of the dielectric plate; and a plurality of rectangular split ring units which are periodically arranged are etched on the metal patch. The super surface-based waveguide slot frequency scanning antenna has the characteristics of wide-angle beam scanning in the narrow band and can be applied to the field of wireless communication of a radar satellite and the like.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, and relates to a waveguide slot frequency scanning antenna, in particular to a metasurface-based waveguide slot frequency scanning antenna, which can be used in wireless communication fields such as radar satellites. technical background [0002] The waveguide slot antenna is an antenna with multiple slots on the side of the waveguide. The antenna radiates electromagnetic waves to the outer space through the slots. The waveguide slot antenna has the advantages of high aperture efficiency, flexible feeding form, stable structure and performance, etc. It has become the preferred form of modern military communication antennas. By using the waveguide slot antenna to realize beam scanning, it can quickly and accurately search and track air targets, and has been widely used. In the field of wireless communication such as radar, aircraft, satellite, etc. [0003] There are two methods of ant...

Claims

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Application Information

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IPC IPC(8): H01Q13/22H01Q21/00
CPCH01Q13/22H01Q21/00H01Q21/0043
Inventor 杨锐张澳芳李冬李佳成师阿元雷振亚
Owner XIDIAN UNIV
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