High-power microwave spatial beam scanning planar array antenna

Abstract

The invention discloses a high-power microwave spatial beam scanning planar array antenna. The antenna is composed of N rotating adjustable phase shifters based on rectangular waveguide narrow-edge slot bridges, N connecting waveguides, N high-power microwave one-dimensional beam scanning linear arrays, N phase shifter phase control units, and driving control units of spiral inner conductors of Mlinear arrays. Each linear array has M radiation units. In the x-axis direction, the n1st to nMth radiation units constitute an nth row of radiation units. In the y-axis direction, the 1mth to Nmth radiation units constitute an mth column of radiation units. The mth spiral inner conductor driving control unit controls the mth column of radiation units. The nth phase shifter phase control unit adjusts the output phase of the nth rotating adjustable phase shifter based on a rectangular waveguide narrow-edge slot bridge. On the basis of realizing beam scanning, the antenna has high aperture efficiency and only needs M+N control motors.

Description

technical field [0001] The invention relates to an antenna in the technical field of high-power microwaves, in particular to a high-power microwave planar array antenna with space beam scanning capability. Background technique [0002] The high power microwave antenna is the terminal of the high power microwave system, and its performance has an important influence on the irradiation ability of the high power microwave system. With the development of high-power microwave technology, it is urgently required that the high-power microwave antenna has the ability of spatial beam scanning. Existing hyperbolic antennas radiated by horns after mode conversion can realize beam scanning through two rotation axes, but this antenna has low aperture efficiency and cannot achieve a conformal design with the platform; high-power microwave radial line helical The array antenna has a GW-level power capacity. By controlling the spatial azimuth angle of the conductor in the helical radiation...

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Problems solved by technology

Existing hyperbolic antennas radiated by horns after mode conversion can realize beam scanning through two rotation axes, but this antenna has low aperture efficiency and cannot achieve a conformal design with the platform; high-power microwave radial line helical The array antenna has a GW-level power capacity. By controlling the spatial azimuth angle of the conductor in the helical radiation unit through the control unit (generally a stepping motor), a certain range of spatial beam scanning can be realized. However, for an antenna with M×N radiation units In terms of the system, M×N number of control units are required to control the rotation of the conductor in the helical radiation unit, resulting in a complex servo system, and the high cost of manufacturing the antenna due to the large number of control units

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