Medium waveguide crack array antenna with series feed of metal hollow waveguide

Abstract

The invention relates to the technical field of antenna designs and particularly relates to a medium waveguide crack array antenna with series feed of a metal hollow waveguide. According to the medium waveguide crack array antenna, the metal hollow waveguide is used as a crack array antenna of a feed device; compared with a traditional medium waveguide feed manner, a feed manner adopted by the invention has small loss; meanwhile, the metal hollow waveguide feed device does not adopt a traditional plane feed manner, and the feed device is independently arranged and is fixed with upper and lower layers of an antenna medium layer, so that a feed line does not occupy a surface area of the medium layer, and furthermore, the surface of the medium layer can be used for arranging antenna radiation cracks and the surface utilization rate of the medium layer is greatly improved.

Description

technical field [0001] The invention relates to the technical field of antenna design, in particular to a dielectric waveguide slot array antenna fed in series by a metal hollow waveguide. Background technique [0002] The waveguide slot array antenna is widely used in radar and communication systems due to its high efficiency, simple design, and easy realization of low sidelobes, but its weight and size are large, and the processing and welding processes are complicated, especially when it reaches the millimeter wave frequency band. , the waveguide crack array has higher and higher requirements on the welding process as the frequency increases, resulting in a substantial increase in cost. In order to overcome these difficulties, in recent years, the use of dielectric substrates to realize slot array antennas (that is, dielectric waveguide slot arrays) has gradually become the mainstream. In this method, the antenna adopts PCB processing technology, and the cost, weight, siz...

AI Technical Summary

Problems solved by technology

[0004] One is that the weight and size of the existing metal hollow waveguide slot array antenna are large, the processing and welding processes are complicated, and the cost is high; The feed network in the structure needs to occupy part of the area, resulting in a small effective radiation area. A dielectric slot array antenna that uses a metal hollow waveguide as the feed network to reduce feed loss and increase the effective area of ​​the effective radiation area is provided.

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