A broadband dual-polarized filter antenna

Abstract

The invention belongs to the field of wireless communication, and particularly relates to a broadband dual-polarization filter antenna in the field, which can be used for 5G base station applications. It is characterized in that it includes a first dielectric board, a second dielectric board, a third dielectric board, a fourth dielectric board, a fifth dielectric board, a radiation patch, a parasitic metal ring, a first short-circuit wall, a second short-circuit wall, and a third short-circuit wall. The short-circuit wall, the fourth short-circuit wall, the reflector and the microstrip power divider; the first dielectric plate is placed horizontally on the top layer of the antenna body; the reflector plate is placed horizontally on the bottom layer of the antenna body, and the center of the reflector plate is etched with a cross slot; There are four short-circuit walls placed symmetrically at the center between the first dielectric board and the reflector; the first dielectric board and the reflector are perpendicular to the short-circuit walls respectively; the radiation patch and the parasitic metal ring are printed on the lower surface of the first dielectric board, The radiation patch is connected with one end of the four short-circuit walls; the other end of the short-circuit wall is connected with the corresponding position of the reflector; the microstrip power divider is printed on the bottom of the reflector. It ensures the dual-polarization filter response of the antenna while ensuring the broadband.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a broadband dual-polarization filter antenna, which can be used for 5G base station applications. Background technique [0002] With the development of wireless communication system, its communication spectrum becomes more and more crowded, and the coupling between antennas working in adjacent frequency bands will affect the performance of the system. This places higher requirements on the selectivity and out-of-band rejection of the passband edge of the antenna. The integrated design of the filter and the antenna can make the antenna have a filter response without increasing the additional space occupancy, so it has become one of the current research hotspots. [0003] However, the filter antennas that have appeared in recent years are mostly based on the integrated design of narrow-band antennas such as patch antennas, and their bandwidths cannot cover multipl...

AI Technical Summary

Problems solved by technology

[0003] However, most of the filter antennas that have appeared in recent years are based on the integrated design of narrowband antennas such as patch antennas, and their bandwidth cannot cover multiple communication frequency bands.

However, broadband filtering schemes are difficult to expand to dual polarization to improve multipath fading and increase channel capacity, so most of them are not suitable for base station antenna applications

Images