Broadband dual L wave guide narrow edge gap antenna array

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...

AI Technical Summary

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

Images