Microwave parabolic antenna with long-focus feedback super-high performance

Abstract

The invention discloses a microwave parabolic antenna with long-focus feedback and super-high performance. The microwave parabolic antenna comprises a standard rotary parabolic main reflector, a round waveguide pipe, a dielectric sputtering plate, an auxiliary reflector, a feed source connecting disc, a metal shielding ring and other assembling and mounting parts, wherein the standard rotary parabolic main reflector is formed through punching or spinning; the round waveguide pipe feeds electricity along the axial line direction of the main reflector; the dielectric sputtering plate is shaped and rotationally symmetric; the auxiliary reflector is formed by metal-plating on the bottom surface of a dielectric sputtering plate; the feed source connecting disc is used for connecting the round waveguide pipe with the main reflector together; the metal shielding ring is connected to the outer edge of the main reflector; and the round waveguide pipe, the feed source connecting disc and the dielectric sputtering plate are positioned on the axial line of the main reflector and are bonded and assembled together to form a core of the whole antenna. The microwave parabolic antenna with long-focus feedback and super-high performance is excellent in performance, lower in cost, attractive in appearance, high in practicability and high in consistency, can be used in a microwave circuit concentrating place, is easy to machine and is more suitable for mass production.

Description

technical field [0001] The invention relates to a microwave antenna, in particular to a telephoto rear feed ultra-high performance microwave parabolic antenna. Background technique [0002] The parabolic antenna is a directional microwave antenna, which consists of a parabolic reflector and a radiator. The radiator is installed on the focal point or focal axis of the parabolic reflector. The electromagnetic wave emitted by the radiator is reflected by the parabola to form a highly directional beam. The parabolic antenna has the advantages of simple structure, strong directivity, and wide operating frequency band. The disadvantages are: since the radiator is located in the electric field of the parabolic reflector, the reflector has a large reaction to the radiator, and it is difficult to get a good match between the antenna and the feeder; the back radiation is large; the protection degree is poor; the manufacturing precision is high. This antenna is widely used in microwa...

AI Technical Summary

Problems solved by technology

The disadvantages are: since the radiator is located in the electric field of the parabolic reflector, the reflector has a large reaction to the radiator, and it is difficult to get a good match between the antenna and the feeder; the back radiation is large; the degree of protection is poor; the manufacturing accuracy is high

However, due to its complex processing and molding, high cost, poor consistency, and the circular symmetry of the antenna pattern is not good due to the shielding of the curved waveguide, which in turn affects other electrical properties of the antenna

[0004] The short-focus microwave parabolic antenna with sputtering plate direct waveguide feed source developed by the applicant in the early stage has solved the above-mentioned problems of the traditional curved waveguide feed source microwave antenna. However, with the continuous development of communication technology, it is necessary to use larger A microwave antenna with higher aperture, higher gain, and better electrical performance; while the short-focus microwave parabolic antenna with a splash plate direct-guided feed is only suitable for small-aperture antennas, and it is difficult to play the required role in large-aperture antennas

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