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Waveguide-terminated slotted antenna array capable of one-dimensional large-angle beam scanning

A beam scanning and antenna array technology, applied in the directions of individually powered antenna arrays, antenna arrays, waveguide openings, etc., to achieve compact structure, avoid grating lobes, and reduce size

Active Publication Date: 2021-05-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a waveguide terminal slotted antenna array capable of one-dimensional large-angle beam scanning, which solves some technical problems of the background art

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  • Waveguide-terminated slotted antenna array capable of one-dimensional large-angle beam scanning
  • Waveguide-terminated slotted antenna array capable of one-dimensional large-angle beam scanning
  • Waveguide-terminated slotted antenna array capable of one-dimensional large-angle beam scanning

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] This embodiment is a waveguide terminal slotted antenna array that can realize one-dimensional large-angle phase scanning, and adopts an 8×8 array element structure. The array antenna works in the W band, and adopts a center frequency of 93 GHz.

[0032] see Figure 1-7 , the 8×8 array antenna is based on a 1*8 unit antenna sub-array, and is periodically arranged at a pitch of 0.46 times the wavelength. Each 1*8-element antenna sub-array is controlled ...

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Abstract

The invention discloses a waveguide terminal slotted antenna array capable of realizing one-dimensional large-angle beam scanning. According to the requirements, the T-type power divider and the π-type power divider are used to design different feeding network modes including series, parallel, series and parallel, and the periodic arrangement is based on the 1*8 element antenna sub-array. Each antenna sub-array is controlled by an input port. The 1*8 unit antenna sub-array is composed of the lower feed network, the upper radiation waveguide, and the radiation slot. The lower feed network is equipped with a T-shaped power divider and four π A π-type power divider is formed, and each π-type power divider connects two radiation waveguides upwards. By slotting at the end of the waveguide, the inherent high efficiency of the waveguide slot antenna array is realized, and the spacing between array elements is effectively reduced, enabling large-angle scanning of the antenna and reducing the size of the antenna array.

Description

technical field [0001] The invention relates to the technical field of waveguide slot antennas, in particular to a waveguide terminal slot antenna array capable of realizing one-dimensional large-angle beam scanning. Background technique [0002] The waveguide slot antenna has the characteristics of compact structure, large power capacity, and high aperture efficiency. Compared with other antenna types, it has irreplaceable advantages in satellite communications and aerospace. It is an aperture antenna formed by opening slender cracks on the waveguide wall according to certain rules, cutting off the current path on the waveguide wall, exciting the gap, and radiating electromagnetic waves transmitted in the waveguide to free space through the gap. [0003] In order to increase the beam scanning range of the antenna array, it is necessary to reduce the spacing between the antenna elements to eliminate the grating lobes of the pattern during large-angle scanning. [0004] For ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q3/34H01Q13/06H01Q21/00H01Q21/06H01Q21/08
CPCH01Q1/36H01Q1/50H01Q3/34H01Q13/06H01Q21/0006H01Q21/0087H01Q21/064H01Q21/08
Inventor 张淼徐阳洲段保权广川二郎柳清伙
Owner XIAMEN UNIV