Broadband polarization reconfigurable high-gain antenna for 5G base station

Abstract

The invention discloses a broadband polarization reconfigurable high-gain antenna for a 5G base station. A plurality of dielectric cavities are sequentially stacked from the top to the bottom to forma stepped dielectric resonator which is fixedly installed at the central position of the upper surface of a dielectric plate, and a back-coated copper sheet is embedded in the lower surface of the dielectric plate; a first probe and a second probe are respectively arranged in any two adjacent corners of the dielectric resonator and are in close contact connection with the side wall of the dielectric resonator; the first probes and the second probes respectively pass through a first excitation port and a second excitation port and are fixedly connected with the back-coated copper sheet, the back-coated copper sheet is of a hexagonal structure, one group of opposite angles of the hexagonal structure are 90 degrees, the other two groups of opposite angles are 135 degrees, and the center of the back-coated copper sheet is coaxial with the central axis of the dielectric resonator. The antenna can be used for a 5G base station, the center frequency of the antenna is 6.8 GHz, + / -45-degree dual polarization, vertical polarization and circular polarization can be achieved, the bandwidth range is 5.9-13 GHz, the horizontal half-power angle is close to 60 degrees, and the highest gain can reach 6.7 dB.

Description

technical field [0001] The present invention relates to the field of electromagnetic field and microwave technology, and specifically relates to a broadband polarization reconfigurable high-gain antenna for 5G base stations. Background technique [0002] With the rapid development of the wireless communication industry, higher requirements are put forward for the miniaturization, broadband, and low loss performance of the antenna. Although various microstrip antennas have been deeply researched and widely used due to their low profile and light weight, due to the skin effect in the high frequency band, the metal ohmic loss per unit volume is high, The geometric size of low-frequency antennas is large, and its development and application are limited. In recent years, dielectric resonator antennas have received extensive attention and research due to their good performance. [0003] Traditional rectangular and cylindrical dielectric resonator antennas can only work in a very...

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Problems solved by technology

[0003] Traditional rectangular and cylindrical dielectric resonator antennas can only work in a very short frequency band, and the gain of the antenna is low. At the same time, limited by the shape of the traditional dielectric resonator and a single feeding mode, the polarization of the antenna is fixed , unable to meet the requirements of 5G base stations

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