Double-ridge horn antenna based on linear tapered ridge width

Abstract

The double-ridge horn antenna comprises a horn shell, a waveguide section, an upper ridge, a lower ridge and a coaxial feeder line, the bottom end of the horn shell is connected with the waveguide section, the upper ridge and the lower ridge are fixed to the inner walls of the two opposite side walls of the horn shell respectively, the upper ridge and the lower ridge are the same in structure, and the coaxial feeder line is arranged between the upper ridge and the lower ridge. A ridge line of the waveguide section comprises a straight line section and a curve section, the curve section adopts a cubic Bezier curve, the coordinate value of a control point of a tail end point of the curve is larger than that of a tail end point of the curve, the coaxial feeder line penetrates through the top end of the waveguide section, an inner conductor and an outer conductor of the coaxial feeder line are connected with an upper ridge and a lower ridge respectively, and the waveguide section is of a cubic structure. A wedge-shaped structure cavity which is integrally formed and manufactured is formed in the body; the widths of the upper ridge and the lower ridge gradually change from EF to EH in the length direction of the ridges. Through the unique design of the antenna form and structure, the problems of antenna frequency bandwidth and directional diagram bandwidth are solved, the antenna gain is greatly improved, and the structure is relatively simple.

Description

technical field [0001] The present application relates to the technical field of communication antennas, in particular to the technical field of ultra-wideband antennas, and more particularly to a double-ridged horn antenna based on linear tapered ridge width. Background technique [0002] Ultra-wideband antenna technology is a hot spot in antenna research at home and abroad. In military applications, it is mainly in radar monitoring, anti-stealth technology and electronic countermeasures, while in civilian applications, it is mainly in broadband communication, spread spectrum communication, ground penetrating radar, field monitoring and electromagnetic compatibility. Ultra-wideband antennas generally refer to antennas with a ratio of the highest frequency to the lowest frequency of more than 10:1. In practical applications, in order to work normally in an ultra-wideband system, it is not only necessary to ensure that the impedance bandwidth of the antenna reaches a suffici...

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Problems solved by technology

[0006] In order to overcome the problems and deficiencies in the above-mentioned prior art, this application proposes a double-ridged horn antenna based on linear tapered ridge width, and solves the problem of antenna frequency bandwidth and pattern by designing a unique antenna form and structure. The bandwidth problem, the antenna gain is also greatly improved, and the structure is relatively simple, easy to implement and use in engineering

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