Double-layer positive feedback fan-shaped wave beam horizontal scanning antenna

Abstract

The invention discloses a double-layer positive feedback fan-shaped wave beam horizontal scanning antenna comprising two metal plates (1), a horn antenna (2), a reflecting surface (3), a metal division plate (4), a transition structure (5) and a supporting structure (6), wherein the metal division plate (4) is arranged between the two metal plates (1) for dividing the space into an upper layer and a lower layer; the horn antenna (2) is arranged between the metal division plate (4) and the metal plate (1) located on the lower layer; the reflecting surface (3) and the horn antenna (2) are oppositely arranged and has a gap with the metal division plate (4) on the horizontal direction; and one end of the transition structure (5) is fixedly connected with the metal plate (1) located on the upper layer and the metal division plate (4), and the other end of the transition structure (5) extends to a free space. The double-layer positive feedback fan-shaped wave beam horizontal scanning antenna can obtain a fan-shaped wave beam and finally realize a horizontal scanning function, the volume is small, the side lobe is reduced, the antenna gain is higher, the energy is more concentrated, the performance is superior, and the antenna can be well matched with a transmission line.

Description

technical field [0001] The invention relates to a double-layer feedforward fan-shaped beam horizontal scanning antenna, which belongs to the technical field of radio frequency antennas. Background technique [0002] The double-layer positive feed-forward fan-shaped beam horizontal scanning antenna enables the entire system to realize fan-shaped beams, and finally realizes the horizontal scanning function, and has the characteristics of small size, concentrated energy, and superior performance. It is widely used in radar and remote microwave communication systems, etc. field. [0003] At present, existing scanning antennas usually have disadvantages such as large volume, high sidelobes, expensive manufacturing, and poor matching with transmission lines. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a double-layer feedforward fan-shaped beam horizontal scanning antenna...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a double-layer feedforward fan-shaped beam horizontal scanning antenna, and solve the problems that the existing scanning antennas usually have large volume, high side lobes, high manufacturing cost, and Problems such as poor matching of transmission lines

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