Dual-linear polarization and dual-circular polarization four-port reconfigurable dielectric resonant antenna

Abstract

The invention discloses a dual-linear polarization and dual-circular polarization four-port reconfigurable dielectric resonant antenna, and belongs to the field of wireless communication. The antennasequentially comprises a circular dielectric block, two layers of dielectric blocks, a dielectric feed plate, a dielectric substrate, a coaxial probe and a bottom feed network from top to bottom. Thelower part of the circular dielectric block is fixed with the dielectric substrate through a dielectric feed plate, and a coaxial probe passes through a through hole at the fixed connection part. Thetwo layers of dielectric blocks are fixed in the center of the dielectric substrate, and a gap is reserved in the center of the dielectric substrate. Bottom feed networks are distributed on the lowersurface of the dielectric substrate, and each corner is provided with a port. The circular dielectric block is connected with a bottom feed network through a coaxial probe and correspondingly connected with a first port and a fourth port, linear polarization is excited, and the feed ports are switched to achieve reconfiguration in the horizontal polarization direction and the vertical polarizationdirection. And the two layers of dielectric blocks are coupled with the bottom feed network through gaps, are correspondingly connected with the second port and the third port, excite circular polarization, and switch the feed ports to realize reconfigurable left-handed and right-handed circular polarization. According to the invention, various reconfigurable configurations are realized.

Description

technical field [0001] The invention belongs to the field of wireless communication, and specifically refers to a four-port reconfigurable dielectric resonant antenna with dual-line polarization and double-circular polarization. Background technique [0002] In the past few decades, dielectric resonant antennas have been widely studied and used because they are composed of low-loss microwave dielectric materials, and their resonant frequency is determined by the size, shape and relative permittivity of the resonator. [0003] Existing research works mainly focus on linearly polarized dielectric resonant antennas, while circularly polarized dielectric resonant antennas have also received more attention because of their ability to provide more stable links and resist multipath distortion. On June 13, 2018, the 3GPP meeting in San Diego set the first international 5G standard, including two spectrum ranges: FR1 from 450MHz to 6000MHz, commonly known as Sub-6GHz, and FR2 from 24...

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Problems solved by technology

[0007] Aiming at the problem that the existing reconfigurable dielectric resonant antenna can only realize one reconfigurable function, and the bottom feeding network is complex, the present invention proposes a dual-line polarization plus dual circular polarization four-port reconfigurable medium Resonant antenna for reconfiguration of polarization and radiation patterns

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