Dual-frequency circularly polarized dielectric resonator antenna

Abstract

The invention discloses a dual-frequency circularly polarized dielectric resonator antenna. The antenna comprises a dielectric resonator, an upper-layer metal ground, a dielectric substrate and a lower-layer copper clad layer which are arranged from top to bottom, wherein the dielectric resonator is arranged at the central position of the upper-layer metal ground; the upper-layer metal ground is paved on the upper surface of the whole dielectric substrate in a copper-clad manner, and two branch-loaded annular gaps are etched at the central position of the upper-layer metal ground, so that the dual-frequency circular polarization of the antenna is realized; the lower-layer copper clad layer is arranged on the lower surface of the dielectric substrate and comprises a middle micro-strip feeder line and metal reflector plates symmetrically arranged on the two sides of the micro-strip feeder line, the micro-strip feeder line extends into the dielectric substrate from one edge of the dielectric substrate, and the starting end of the micro-strip feeder line is connected with a feed port of the side antenna; and energy is input through the feed port, transmitted through the microstrip feed line and coupled to the dielectric resonator through the annular gap in the center of the upper-layer metal ground. The antenna provided by the invention has the characteristics of small size and dual-frequency work.

Description

technical field [0001] The invention relates to the technical field of dielectric resonator antennas, in particular to a dual-frequency circularly polarized dielectric resonator antenna. Background technique [0002] In the field of modern communication, the disadvantages of serious metal antenna conductor loss and low radiation efficiency are becoming more and more obvious, while the dielectric resonator antenna has no metal and surface wave loss, high radiation efficiency, various feeding methods, large power capacity, and is sensitive to processing errors low degree. Therefore, it is very necessary to develop a dielectric resonator antenna with simple structure and high efficiency. [0003] The circularly polarized antenna has a large communication capacity, can radiate and receive arbitrary polarized waves, is insensitive to the direction of transmission and reception, and can reverse the direction of rotation. Based on the above advantages, scholars have turned to res...

AI Technical Summary

Problems solved by technology

However, most of the circularly polarized dielectric resonator antennas currently studied work in a single frequency band, and the work efficiency is low.

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