Structure and preparation method of a split double-ridge rectangular horn antenna

Abstract

The invention provides a split double-ridge rectangular horn antenna structure, including a spine cover, a spine box and a feed seat, the spine cover includes an upper spine, a straight waveguide section cavity cover, and the upper half of the horn section. The ridge box includes the lower ridge, the cavity of the straight waveguide section, the lower half of the horn section, the rear cover plate and the mounting flange. The connecting contact surfaces of the ridge cover and the ridge box are provided with mounting holes and self-positioning structures respectively. The positioning The structure is used for the precise assembly of the spine cover and the spine box. The feed base is fixed on the rear cover through the first connecting screw and the mounting flange; the second connecting screw fixes the spine cover and the spine box through the mounting holes to form a double-ridge rectangular horn The main structure of the antenna.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a split double-ridge rectangular horn antenna structure and a preparation method. Background technique [0002] The double-ridged rectangular horn antenna has the advantages of wide operating frequency bandwidth, large power capacity, and good radiation characteristics. It is currently widely used in communications, radar, and electronic warfare. In the existing literature, there are many studies on the electromagnetic design of this antenna, but the introduction of its structural form is a simple schematic diagram, and there is a lack of detailed structural design introduction. As we all know, the antenna is a typical mechatronic product. The selection of the structural molding method and the detailed structural design of each component not only affect the electromagnetic performance and mechanical strength of the antenna, but also directly affect the accuracy, manufacturing cycle and c...

AI Technical Summary

Problems solved by technology

This method decomposes many parts, many assembly links, and the cumulative error is large, which affects the further improvement of the electromagnetic performance of the antenna.

In addition, this method requires that the upper ridge and the lower ridge in the antenna need to have a larger size space to set the installation position of the screw. The installation and fit of the ridge and the inner wall of the waveguide cavity and the horn section cannot achieve a tight fit, and there are gaps. These gaps It will reduce the gain of the antenna (see literature: Xidian University. Broadband Double Ridge Horn Antenna: 201610068745.0[P]. 2016-06-29)

[0008] To sum up, in the existing structural molding methods, block welding has large deformation, poor precision, and low strength; the overall molding of carbon fiber composite materials and the overall casting horn have poor inner surface roughness, low dimensional accuracy, and high cost; This method of piece assembly requires that the upper ridge and the lower ridge need to have a large size space to set the screw installation position. These structural forming methods cannot meet the requirements of some small-sized, high-precision double-ridge rectangular horn antennas.

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