Satellite-borne L wide beam antenna

Abstract

The invention discloses a satellite-borne L wide beam antenna. The antenna comprises a metal supporting body extending along a vertical direction, a square oscillator transversely extends from the topend of the metal support body, and the metal support body is vertically provided with four choke grooves which are arranged along the circumferential direction and are adjacent to each other at an angle of 90 degrees. The choke grooves extend upwards and divide the square oscillator into four square secondary oscillators which separately a first secondary oscillator, a second secondary oscillator, a third secondary oscillator and a fourth secondary oscillator which are sequentially adjacent in the circumferential direction. The first secondary oscillator and the third secondary oscillator which are opposite to each other form a first oscillator pair, and the second secondary oscillator and the fourth secondary oscillator which are opposite to each other form a second oscillator pair. A gap is reserved between the lower end of each choke groove and the bottom face of the metal supporting body, the lower end of the metal supporting body is connected with a bottom plate, and a circular polarizer is arranged below the bottom plate and is connected with a signal input port. The satellite-borne L wide beam antenna adopts the arrangement form of the symmetrical oscillators and is simplein structure, the feeder welding is stable and firm, and the width of beams is increased.

Description

technical field [0001] The invention relates to the field of space-borne antennas, in particular to a space-borne L wide-beam antenna. Background technique [0002] Most of the oscillators in the existing L-band antennas have unreliable structures, cannot effectively widen the beam width, and cannot realize beam shaping. The connection between the feeder and the oscillator is still not reliable. Heavy. [0003] Therefore, how to make the spaceborne L antenna effectively widen the beam width and implement beam forming while miniaturizing is a technical problem to be solved by those skilled in the art. Contents of the invention [0004] The technical problem mainly solved by the present invention is to provide a space-borne L wide-beam antenna, which solves the problems in the prior art that the vibrator structure of the L antenna is unreliable, the beam width cannot be effectively widened, and the beamforming cannot be realized. [0005] In order to solve the above-mentio...

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a space-borne L wide-beam antenna, which solves the problem that the vibrator structure of the L antenna in the prior art is unreliable, the beam width cannot be effectively widened, and the beamforming cannot be realized.

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