Dual-polarized broadband antenna array with high-isolation suspended microstrip line for balanced feeding

Abstract

The invention discloses a dual-polarized broadband antenna array with a high-isolation suspended microstrip line for balanced feeding. The antenna array mainly comprises an antenna body and a feed network for feeding the antenna body, the antenna body is formed by arranging a plurality of antenna units. The antenna unit comprises an upper dielectric plate, a middle dielectric plate, a lower dielectric plate, a first polarization coaxial probe and a second polarization coaxial probe. A radiation patch is printed on the upper surface of the upper dielectric plate and is connected with the firstpolarization coaxial probe and the second polarization coaxial probe, and a grounding reflection plate is printed on the lower surface of the lower dielectric plate. Compared with the prior art, the dual-polarized broadband antenna array has the advantages of high isolation, the high gain and the wide impedance bandwidth.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a dual-polarized wideband antenna array with high isolation suspension and balanced feeding of microstrip lines. Background technique [0002] In recent years, with the wide application and rapid development of satellite communication, higher requirements are put forward for the antenna design in satellite communication system. Microstrip antennas are attracting more and more attention because of their low profile, light weight, easy conformability, easy processing and diverse feeding methods. However, the feed network of most microstrip antennas is designed as the microstrip line in the middle layer of the printed board, which makes the antenna loss larger; the ordinary dual-polarized microstrip antenna has the best isolation without taking other measures. Generally lower, and due to the dual-polarization feed of the dual-polarized antenna, it is difficult to realize the dua...

AI Technical Summary

Problems solved by technology

However, the feed network of most microstrip antennas is designed as the microstrip line in the middle layer of the printed board, which makes the antenna loss larger; the ordinary dual-polarized microstrip antenna has the best isolation without taking other measures. Generally low, and due to the dual-polarized feeding of dual-polarized antennas, it is difficult to realize the dual-polarized feeding network arrangement of large antenna arrays with single-layer feeders between printed boards

In addition, there is also a dual-polarized antenna array fed by a combination of waveguide and suspended strip line, but its volume is large and its profile is high.

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