Broadband dual L wave guide narrow edge gap antenna array

A slot antenna and broadband technology, which is applied in the field of broadband waveguide narrow-side slot antennas, can solve the problems of difficult processing, complex rectangular chamfer processing and detection, installation and fixation of dielectric sheets with different thermal characteristics, etc., so as to reduce processing costs and improve Antenna efficiency, compact structure

Inactive Publication Date: 2008-03-26
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the consideration of processing difficulty and reliability, the inclined metal rod needs to open inclined holes on the upper narrow wall and side wall of the waveguide, insert the thin metal rod into the inclined hole and weld, which is difficult to process; the dielectric sheet with metal strips on the surface is from When the radiation gap is inserted into the radiation waveguide, there are problems such as different thermal characteristics between different materials, the installation and fixation of the dielectric sheet, and the introduction of additional dielectric loss; although the integrated processing of the cut-off metal diaphragm and the radiation waveguide cavity is well solved These problems are solved, but the rectangular corner cutting still increases the complexity of processing and detection

Method used

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  • Broadband dual L wave guide narrow edge gap antenna array
  • Broadband dual L wave guide narrow edge gap antenna array
  • Broadband dual L wave guide narrow edge gap antenna array

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Embodiment

[0053] A preferred embodiment of the present invention is a uniformly distributed 16-element X-band waveguide narrow-side slot linear array with a center frequency of 9.6GHz and an operating bandwidth of 800MHz. It consists of an inverted L-shaped radiation waveguide 1 and 16 radiation slots 4 arranged thereon, an L-shaped feed waveguide 2 and a coaxial connector 3 .

[0054] Referring to Fig. 1-Fig. 5, the broadband dual L-shaped waveguide narrow-side slot antenna array includes a radiation waveguide 1, a feed waveguide 2 and a coaxial connector 3; a metal matching block is set at the connection between the coaxial connector 3 and the feed waveguide 2 6. The matching block is a rectangular metal sheet, which is set at the junction of the inner conductor of the coaxial connector 3 and the inner cavity of the feeding waveguide 2;

[0055] The coaxial connector 3 and the feed waveguide 2 form a T-shaped structure, forming a 3dB waveguide power splitter.

[0056] The radiation w...

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Abstract

This invention relates to a broad band dual-L shape waveguide narrow edge slot antenna characterizing that the radiation waveguide is a metal waveguide tube with L-shape cross section, the feed waveguide is a metal one of L-shape cross section, non-salient direct radiating slots excited by multiple pairs of rectangular metal membranes are opened at the narrow edge of the radiation waveguide, said antenna is divided into two sub-antennas from the middle to be excited and fed by the feed waveguide, which is in compact structure, small cross section, high efficiency and low cross polarization component, low loss and simple structure.

Description

technical field [0001] The invention relates to an antenna for radio wave reception and transmission, in particular to a broadband waveguide narrow-side slot antenna. Background technique [0002] Broadband antennas are increasingly used in military and civilian applications. At the same time, in some specific applications, there are special requirements such as: volume, weight, loss and scanning angle. [0003] For example, for wide-angle scanning planar antenna arrays, the distance between antenna elements is required to be small, close to one-half of the wavelength; for high-resolution multi-polarization synthetic aperture radar, it is required to design antennas with dual polarization and low cross polarization , high isolation and other characteristics, the waveguide slot array is required to have a compressed width in the lateral structure, and at the same time, performance requirements such as low profile, light weight and high efficiency are also required for antenn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q13/10H01Q13/08
Inventor 汪伟金剑张玉梅齐美清
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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