High-gain broadband horn antenna

Abstract

The invention discloses a high-gain broadband horn antenna. The high-gain broadband horn antenna includes a square horn, a waveguide and a coaxial connector, wherein the square horn is connected withthe waveguide; the waveguide and the coaxial connector are detachably connected; the square horn includes a horn housing, an upper ridge and a lower ridge; the upper ridge and the lower ridge are arranged in the horn housing; the horn housing is a rectangular horn structure which is formed through mutual splicing of a pair of narrow-surface metal walls and a pair of wide-surface metal walls; the upper ridge and the lower ridge are arranged on the wide-surface metal walls; one end, of each of the upper ridge and the lower ridge, close to a feeding point, is an arc structure; one end, of each ofthe upper ridge and the lower ridge, close to the opening of the horn housing, is provided with a plurality of rippled grooves; and the waveguide is a rectangular waveguide structure with a cavity. For the high-gain broadband horn antenna, by setting a plurality of rectangular holes on the narrow-surface metal walls, the antenna can obtain better low frequency characteristic while no deviation occurs on a high frequency radiation directional diagram; and due to the curve structure of the ridge body of the high-gain broadband horn antenna, the standing-wave ratio of the antenna can be reduced,and better radiation effect can be obtained.

Description

technical field [0001] The invention relates to the technical field of radio frequency antennas, in particular to a high-gain broadband horn antenna. Background technique [0002] With the development of microwave communication technology, ultra-wideband antenna equipment has attracted much attention, and has been widely used in the field of transient electromagnetic fields such as broadband communication, spread spectrum communication, ground penetrating radar, and electromagnetic compatibility. However, the existing ultra-wideband horn antennas cannot satisfy all frequency bands with good voltage standing wave ratio and radiation pattern when performing microwave testing or microwave applications, and cannot effectively suppress the radiation of backward electromagnetic waves and effectively control standing waves. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-gain broadband hor...

AI Technical Summary

Problems solved by technology

However, when the existing ultra-wideband horn antenna is used for microwave testing or microwave application, it cannot satisfy all frequency bands with good voltage standing wave ratio and radiation pattern at the same time, and cannot effectively suppress the radiation of backward electromagnetic waves, and cannot effectively control standing waves.

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