Differential dual-polarized dielectric resonator antenna

Abstract

Disclosed is a differential dual-polarized dielectric resonator antenna. The differential dual-polarized dielectric resonator antenna comprises a grounding substrate, and a crossed dielectric resonator arranged on the grounding substrate, wherein the crossed dielectric resonator is equivalent to two rectangular dielectric resonators formed in an orthorhombic manner; a group of differential feed structures are arranged at the two ends of each rectangular dielectric resonator in an mirror image manner separately; and each group of the differential feed structures are electrically connected with one group of differential feed interfaces on the other surface of the grounding substrate. The differential feed way is designed on the basis of the crossed dielectric resonator; the differential feed can suppress an electromagnetic field to be in higher mode in same-phase distribution; a virtual ground formed by the differential feed can suppress influence between orthogonal modes of the two rectangular dielectric resonators which are equivalent to the crossed dielectric resonator; therefore, when a dual-polarized radiation function is realized by the orthogonal modes of the two rectangular dielectric resonators, compared with a single-end dielectric resonator antenna, the differential dual-polarized dielectric resonator antenna disclosed by the invention suppresses a part of stray pattern, remarkably improves port isolation degree and lowers crossed polarization.

Description

technical field [0001] The invention relates to the field of radio frequency communication, in particular to a differential dual-polarization dielectric resonator antenna. Background technique [0002] Dielectric resonator antennas have received extensive attention due to their many advantages such as high radiation efficiency, low loss, small size, low cost, light weight, easy excitation, and high design flexibility. In recent designs, dielectric resonator antennas are very often used to replace metal antennas. As we all know, dielectric resonators have numerous resonant modes as cavity resonators, which can resonate at different frequencies. In practical designs, higher-order modes (as spurious responses) above the resonant frequency of the main mode often need to be suppressed. On the other hand, sometimes it is necessary to utilize higher-order modes to achieve certain performances, such as in dual-band or broadband antennas. In both cases, it is difficult to suppress...

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Problems solved by technology

In both cases it is difficult to suppress the undesired pattern

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