Low-profile dual-polarization dipole base station antenna loaded with AMC reflecting plate

Abstract

The invention discloses a low-profile dual-polarization dipole base station antenna loaded with an AMC reflecting plate. The antenna comprises a dual-polarization planar dipole antenna, four plastic support columns and the AMC reflecting plate. The dual-polarization planar dipole antenna comprises coupling microstrip lines, an upper dielectric plate, a radiating structure and coaxial lines from top to bottom in sequence; the AMC reflecting plate comprises a rectangular patch, a lower dielectric plate, an air dielectric, metal support columns and a metal plate which are periodically arranged from top to bottom in sequence, the coupling microstrip lines and the radiating structure are located on the upper side and the lower side of the upper dielectric plate in the same placing direction, and + / -45-degree dual-polarization is achieved in a coaxial line feeding mode. The dual-polarization planar dipole antenna is fixed to the AMC reflecting plate through the plastic support columns. Accordingly, the AMC reflecting plate is adopted for replacing an original metal reflecting plate, the antenna profile height is lowered to 0.132 lambda 2.2 GHz from 0.264 lambda 2.2 GHz, and meanwhile the advantages of being wide in frequency band, high in isolation, low in cross polarization, low in cost and the like are reserved. The application requirement of the current communication industry is met, and the low-profile dual-polarization dipole base station antenna conforms to the development trend of miniaturization of current base station antennae and has practical reference value.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, in particular to the technical field of mobile communication base station antenna design and manufacture, and relates to a low-profile dual-polarized dipole base station antenna loaded with an AMC (Artificial Magnetic Conductor, artificial magnetic conductor) reflector. Background technique [0002] The base station antenna is the core part of the mobile base station, and its performance directly affects the quality of the entire communication system. With the continuous expansion of wireless information transmission requirements, the complexity of communication systems is gradually increasing. In order to adapt to the long-term coexistence of multiple mobile communication standards and the tight location of base station sectors, base station antennas are gradually developing towards dual polarization, broadband and miniaturization, which is also the trend of future 5G communication ...

AI Technical Summary

Problems solved by technology

However, the traditional AMC structure has a narrow in-phase reflection phase bandwidth, and a high frequency point of the 0-degree reflection phase

There are still great difficulties in obtaining broadband characteristics with dual-polarized dipole antenna loading, while taking into account the application frequency range, high isolation, and low cross-polarization of base station antennas.

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