Polarized reconfigurable magneto-electric dipole antenna

Abstract

The invention discloses a polarized reconfigurable magneto-electric dipole antenna, comprising a square upper PCB board, a square lower PCB board, a feed port and four antenna units. The four antenna units are arranged on the diagonals of the upper PCB board in a central symmetry mode. The lower PCB board comprises a square substrate integrated waveguide resonant cavity and a coupling slot. An inner conductor of the feed port is connected with patches on the upper surface of the lower PCB board. An outer conductor is connected with the patches on the lower surface of the lower PCB board. The polarized reconfigurable magneto-electric dipole antenna provided by the invention has the advantages of simple structure, low loss, wide bandwidth, high gain, high radiation efficiency and convenient switch among three polarized states. The polarized reconfigurable magneto-electric dipole antenna is very applicable to a modern wireless communication system, especially a 5G-band WiFi system.

Description

[0001] [technical field] [0002] The invention relates to a microwave passive device, in particular to a polarization reconfigurable magnetoelectric dipole antenna. [0003] [Background technique] [0004] With the vigorous development of wireless communication, modern wireless communication systems have increasingly higher requirements on the bandwidth and directivity of antennas. The existing broadband microstrip patch antennas and traditional directional dipole antennas can no longer meet the requirements. As a new generation of broadband directional antenna, the magnetoelectric dipole antenna has been widely concerned by the industry since it was proposed due to its advantages such as wide bandwidth, high gain, high radiation efficiency, compact structure, simple manufacturing process, and low cost. A magnetoelectric dipole usually consists of an electric dipole and a magnetic dipole placed orthogonally, and the two dipoles are placed together or separated by a small dista...

AI Technical Summary

Problems solved by technology

However, (1) although the polarization reconfigurable patch antenna is easy to implement and the cost is low, its working bandwidth is less than 10%, which cannot meet the ever-changing requirements of broadband wireless communication; (2) the polarization reconfigurable slot antenna Although it has a wider operating bandwidth, the lower gain will greatly limit its application value; (3) Although the polarization reconfigurable monopole antenna has a wider bandwidth and omnidirectional radiation characteristics, its complex The structure will make the structure of the whole communication system more complex

The various defects mentioned above will limit the application of these polarization reconfigurable antennas in modern wireless communication systems, especially in 5G WiFi systems

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