High-power microwave one-dimensional beam scannable linear array antenna

Abstract

The invention discloses a high-power microwave one-dimensional beam scannable linear array antenna and aims to expand a linear array beam scanning range and maintaining radiation efficiency. The high-power microwave one-dimensional beam scannable linear array antenna comprises a rectangular waveguide and a one-dimensional linear array, wherein the one-dimensional linear array comprises M radiationunits, the radiation units are arranged on a narrow edge of the rectangular waveguide, each radiation unit comprises a reflection elimination rod, a spiral line inner conductor and a coupling cavity,the spiral line inner conductor is inserted into the rectangular waveguide by the coupling cavity, penetrates through the rectangular waveguide and is connected with a stepping motor, the spiral lineinner conductor comprises a straight cylinder, a half-circular ring and a segment of spiral line, the space direction angle difference between two adjacent spiral line inner conductor is a constant,a cylindrical boss is arranged at one end of the coupling cavity, a cuboid is arranged at one end, four holes with different shapes are excavated in the coupling cavity, and rotation angles Theta m ofthe M coupling cavitys are different. By the high-power microwave one-dimensional beam scannable linear array antenna, the beam scanning range can reach 70 degrees, the radiation efficiency within the whole beam scanning range is maintained at 95% or above, and the high-power microwave one-dimensional beam scannable linear array antenna is easy to implement on engineering.

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 antenna with one-dimensional beam scanning capability. Background technique [0002] With the development of pulse power technology and plasma science, high-power microwave sources have obtained microwave pulses with higher frequencies, longer pulses, higher peak power, and higher repetition frequencies, which provides an opportunity to further promote the application of high-power microwave technology. Foundation. The high-power microwave antenna is the terminal of the high-power microwave system, and its performance largely determines the irradiation capability of the high-power microwave system. In the practical application of some high-power microwave systems, it is required that the microwave beam radiated by the antenna can continuously irradiate the moving target, which puts forward the demand for the research of high-pow...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the narrow scanning range of the existing linear array beam, solve the problem of the decline in radiation efficiency during the beam scanning process, and the problem of small beam scanning range, and can be controlled by a stepping motor in engineering to realize the beam scanning

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