Double-ridge open waveguide structure circularly polarized antenna array based on 3D printing technology

Abstract

The invention provides a double-ridge open waveguide structure circularly polarized antenna array based on the 3D printing technology, which is manufactured by 3D printing of a dielectric material and electroplating of a metal film, and comprises a coaxial connector, a feed network and at least one antenna unit, and each antenna unit comprises a dielectric block, a ridge waveguide and a transition section which are sequentially arranged from top to bottom. Two ridge structures for converting linear polarization into circular polarization are symmetrically arranged in the ridged waveguide; the feed network is used for feeding the antenna unit; and the coaxial connector is fixedly connected with the feed network. According to the invention, a triangular prism double-ridge structure is used as a waveguide built-in polarizer. According to the design, linear polarization excitation can be converted into circular polarization radiation under the condition that a complex feed network is not introduced and the physical size of the antenna unit is not increased, and the antenna array has the advantages of being simple in structure, convenient to implement and good in working performance.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a circularly polarized antenna array with a double-ridge opening waveguide structure based on 3D printing technology. Background technique [0002] Aperture waveguide antenna is a very common and important antenna type, because of its excellent electrical performance, such as: low loss, high power capacity, stable radiation performance, etc., it is often widely used in various civil and military communication systems. With the continuous development of mobile communication technology, the research of aperture waveguide antenna becomes more and more important. In order to meet the higher data transmission rate, the working frequency band of the communication system is constantly increasing, and gradually begins to migrate to the millimeter wave and terahertz frequency bands. In these frequency bands, problems such as electromagnetic wave loss and isolation are often very difficu...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a circularly polarized antenna array with a double-ridge opening waveguide structure based on 3D printing technology, which combines 3D printing technology with the concept of a medium-loaded waveguide to solve the problem of large volume, heavy weight, and difficult processing of waveguide antenna arrays in the prior art. , large unit spacing, difficulty in array formation, etc.

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