One-dimensional phased array scanning parabolic cylinder antenna

Abstract

The invention discloses a one-dimensional phased array scanning parabolic cylinder antenna, and belongs to the technical field of communication measurement and control. The antenna comprises a parabolic cylinder reflecting surface, a phase shift gating shunt or combiner group and a feed source linear array, wherein the feed source linear array is located on the focal line of the parabolic cylinder reflecting surface and coincides with the focal line, the phase shift gating shunt or combiner group is connected with the feed source linear array through a radio frequency cable, the input / output port at the other end is connected with an external transceiver through a cable, the phase shift gating shunt comprises a plurality of phase shifters and a plurality of gating switches, one end of each phase shifter is connected with the corresponding feed source, the other end of each phase shifter is connected with the corresponding gating switch, and the other ends of the gating switches are connected to the shunt or the combiner. According to the invention, the antenna can realize the performances of high gain, one-dimensional phased beam scanning and the like, has the characteristics of simple structure, simple system composition and high scanning speed, and is suitable for being used as a large ground station communication measurement and control antenna.

Description

technical field [0001] The invention relates to the technical field of communication measurement and control, in particular to a one-dimensional phased array scanning parabolic antenna. Background technique [0002] In the field of communication measurement and control, antennas that can form high-gain and scannable beams mainly have the following structural forms. Although they have their own characteristics in terms of performance, they all have certain shortcomings. [0003] 1. The parabolic antenna can achieve high gain performance, but it needs a mechanical rotating structure to realize beam scanning, and the structure is complex. [0004] 2. The phased array antenna can achieve high gain performance, and realize automatic beam scanning by controlling the phase shifter, but it requires a large number of phase shifters, feed network and other components, and the system is very complicated. [0005] 3. The parabolic cylindrical antenna irradiated by the conventionally de...

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Problems solved by technology

[0003] 1. The parabolic antenna can achieve high gain performance, but it needs a mechanical rotating structure to realize beam scanning, and the structure is complex

[0004] 2. The phased array antenna can achieve high gain performance, and realize automatic beam scanning by controlling the phase shifter, but it requires a large number of phase shifters, feed network and other components, and the system is very complicated

[0005] 3. The parabolic cylindrical antenna irradiated by the conventionally designed feed line array can realize one-dimensional phased array beam scanning, but the problem is that the beam irradiation leakage is serious and the antenna efficiency is low during phased beam scanning due to the small reflection surface. Reducing radiation leakage requires increasing the size of the reflective surface, which is not conducive to engineering use

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