Sequential phase feed circular polarization dielectric resonant antenna array

Abstract

The invention discloses a sequential phase feed circular polarization dielectric resonant antenna array which is composed of n dielectric resonators, a four-rotation feed network, Wilkinson power distributors, a dielectric substrate, coaxial feeding, metal probes and strip lines. The N dielectric resonators form an array on the dielectric substrate. The feed network is composed of one four-rotation feed network and four one-to-two Wilkinson power distributors which are located on the central back of the dielectric substrate. The coaxially transmitted energy is fed to the two frequency dividersvia the feed network and coupled to the orthogonally arranged strip lines on the side wall of the dielectric resonator by the two metal probes arranged at the output end of the frequency divider. Thearray can realize narrower main lobe radiation pattern width, higher gain, wider impedance bandwidth and axial ratio bandwidth, thereby enabling the antenna to have further excellent and stable circular polarization performance and better meet the index requirements of modern communication technology for the circular polarization communication system.

Description

technical field [0001] The invention belongs to the technical field of circular polarization communication in modern communication systems, and in particular relates to a sequential phase-feed circular polarization rectangular dielectric resonant antenna array. Background technique [0002] With the development of space and communication technology, circularly polarized antennas play an important role in the wireless field because of their great advantages. Linearly polarized waves are prone to polarization deflection and attenuation in the transmission environment, while circularly polarized waves will reverse when encountering obstacles. Anti-interference ability and anti-rain and fog ability, and are widely used in civilian and military fields. At present, circularly polarized antennas are mainly divided into the following two forms, although each has its own characteristics in terms of performance, but both have certain deficiencies. [0003] 1. Helical antenna, helica...

AI Technical Summary

Problems solved by technology

But at the same time, the frequency band of the microstrip antenna is narrow, there are conductor and dielectric losses, and it will stimulate the surface wave to reduce the radiation efficiency, the performance is greatly affected by the substrate material, and the power capacity of the microstrip antenna is small, so it is generally only used for small and medium-sized power occasion

Images