High-power wide-beam circularly polarized antenna with lightning protection function

Abstract

The invention relates to a high-power wide-beam circularly polarized antenna with a lightning protection function. The high-power wide-beam circularly polarized antenna comprises an antenna cover, a metal bottom plate, a strip line power division network assembly, a dielectric strut, an antenna radiator, an antenna connector and a lightning rod; the strip line power division network assembly is mounted on the top surface of the metal bottom plate; the dielectric strut is installed on the top surface of the strip line power division network assembly; the antenna radiator is spirally wound on the circumferential surface of the dielectric strut; the bottom of the antenna radiator is welded with the strip line power division network assembly, and the top of the antenna radiator is fixed at thetop of the dielectric strut; the antenna connector is mounted on the bottom surface of the metal bottom plate, and an inner core of the antenna connector is welded with the strip line power divisionnetwork assembly; one end of the lightning rod passes through the axis of the dielectric strut and is matched and connected with the metal bottom plate, and the other end passes through the antenna cover and extends out of the antenna cover. Lightning protection, high power capacity, wide beam and circular polarization radiation characteristics can be simultaneously realized, so that the antenna is suitable for aircraft communication of an airport ground station.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a high-power wide-beam circularly polarized antenna with a lightning protection function. Background technique [0002] Circularly polarized antenna (CP), especially at low frequency, has the advantages of small Faraday effect, high link reliability, better immunity to multipath distortion, and particularly high communication efficiency with any linearly polarized antenna. For antenna systems installed at airport ground stations for aircraft communications, circularly polarized antennas with wide beams are especially widely used since the aircraft can fly towards the antenna from any direction. For long-distance communication, the antenna is required to be able to transmit high power and to be installed in a high position. However, high-power antennas require special striplines to design feed networks, and antennas installed at high places are vulnerable to lightnin...

AI Technical Summary

Problems solved by technology

However, high-power antennas require special striplines to design the feed network, and antennas installed at high places are vulnerable to lightning strikes

In order to protect against lightning, it is necessary to install lightning protection equipment on the antenna. The performance of the traditional antenna form is greatly affected by the lightning rod, and it is difficult to achieve wide beam characteristics.

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