Integrated substrate gap waveguide feed slot coupled meta-surface linearly polarized antenna

Abstract

The invention discloses an integrated substrate gap waveguide feed slot coupled meta-surface linearly polarized antenna which is composed of four layers of dielectric plates. The upper surface of thefirst dielectric plate is provided with periodically arranged square patches so as to form a meta-surface radiation structure. The upper surface of the second dielectric plate is provide with a firstcopper clad layer, and the lower surface is provided with a microstrip feed line in a printing way so as to form a waveguide-like structure to transmit energy. The energy is coupled to the square patches through a rectangular slot etched on the first copper clad layer. The third dielectric plate is a blank dielectric plate and used for separating the second dielectric plate from the fourth dielectric plate. Circular patches are printed on the upper surface of the fourth dielectric plate with metal via holes arranged on the upper surface, and the lower surface is provided with a second copper clad layer so as to form a mushroom-shaped electromagnetic band gap structure together and increase the shielding property of the circuit. The integrated substrate gap waveguide feed slot coupled meta-surface linearly polarized antenna has the characteristics of low profile, wide bandwidth, high gain, easy processing and the like and can be used as a 5G millimeter wave antenna.

Description

technical field [0001] The invention relates to a wireless communication millimeter wave antenna, in particular to an integrated substrate gap waveguide feeding slot coupling metasurface linearly polarized antenna. Background technique [0002] With the development of communication systems, people's requirements for the frequency of devices in the microwave and millimeter wave bands continue to increase. When the traditional microstrip line structure is applied to higher frequencies, greater loss and leakage will occur. [0003] The integrated substrate gap waveguide can better solve the above problems. The structure is based on multi-layer PCB technology, and the microstrip line is encapsulated in the electromagnetic bandgap structure to improve the shielding of the feed network. In recent years, metasurface structures have been used in antenna design, which can improve the performance of antennas in various aspects, such as expanding bandwidth, increasing gain, improving ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: aim at the above existing problems, provide an integrated substrate gap waveguide feeding slot coupling metasurface linearly polarized antenna, which solves the problems of narrow bandwidth, low gain and serious leakage of existing millimeter wave antennas , and the invention can be applied to radio frequency, microwave and millimeter wave frequency bands

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