High-power microwave polarization conversion super-lens antenna

Abstract

The invention discloses a high-power microwave polarization conversion super-lens antenna, and aims to solve the problems that an existing horn antenna does not have a polarization conversion functionand is not compact enough in the axial direction when matching a waveguide circular polarizer. The antenna is composed of a horn antenna and a polarization conversion super lens. The horn antenna iscomposed of a first flange plate, a conical horn and a second flange plate. The polarization conversion super-lens is formed by arranging and combining a plurality of polarization conversion super-lens units in a honeycomb shape, a through hole is drilled in the center of each polarization conversion super-lens unit, two arch-shaped columns are arranged in each through hole and connected with theinner wall of the through hole through supporting rods respectively, and two matching grooves are formed in the two ends of each polarization conversion super-lens unit respectively. The cross sectionof each polarization conversion super-lens unit is a regular hexagon, and the polarization conversion super-lens units are closely arranged into a circle. According to the invention, the thickness isabout one free space wavelength, the axial direction is more compact, the power capacity is higher, a linear polarization mode can be directly converted into a circular polarization mode, and the circular polarization microwave mode is radiated into the free space.

Description

technical field [0001] The invention relates to a radiation antenna in the technical field of high-power microwaves, in particular to a high-power microwave polarization conversion metalens antenna capable of realizing circularly polarized radiation. Background technique [0002] As an emerging subject, high power microwave has broad application prospects in both military and civilian fields. As an important part of the high-power microwave system, the high-power radiation antenna determines whether the energy generated by the high-power microwave source can be effectively radiated or concentrated on the target. At present, most high-power microwave radiation antennas are linearly polarized antennas, which are difficult to play a role in circularly polarized receiving electronic equipment, and part of the energy will be lost due to polarization mismatch. Therefore, in order to improve the effect of high-power microwave antennas and expand the application range of high-power...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new type of high-power microwave polarization conversion metalens antenna, which has a compact structure and high gain, and is used to solve the problem that the existing horn antenna does not have the polarization conversion function, and it is not compatible with the circular pole of the waveguide. When the carburetor is matched, the axial direction is not compact enough, etc.

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