High Power Microwave One-dimensional Beam Sweepable Linear Array Antenna

Abstract

The invention discloses a high-power microwave one-dimensional beam sweepable linear array antenna, aiming at improving the scanning range of the linear array beam and maintaining radiation efficiency. The invention consists of a rectangular waveguide and a one-dimensional linear array; the one-dimensional linear array is composed of M radiation units, and the radiation units are installed on the narrow side of the rectangular waveguide; the radiation unit is composed of a reflection eliminating rod, a helical inner conductor and a coupling cavity; the helical The in-line conductor is inserted into the rectangular waveguide through the coupling cavity, passes through the rectangular waveguide, and is externally connected with a stepping motor. The inner conductor of the helix is ​​composed of a straight cylinder, a semi-circular ring and a section of helix. The spatial orientation angle difference between two adjacent helix inner conductors is a constant. One end of the coupling cavity is a cylindrical boss, and the other end is a cuboid. Inside the coupling cavity Four holes of different shapes are dug, and the rotation angle θ of M coupling cavities m different. The invention can make the scanning range of the beam reach 70 degrees; the radiation efficiency can be kept above 95% in the whole scanning range of the beam, and it is easy to realize in 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...

AI Technical Summary

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

Images