A compact flangeless waveguide connection structure and design method

Abstract

The invention discloses a compact flangeless waveguide connection structure. The male connection part includes a first standard waveguide, a first impedance transformation section, a first non-standard waveguide section and a periodic metal convex array, wherein the first impedance transformation section is located at Between the first standard waveguide and the first non-standard waveguide section, a periodic array of metal protrusions is arranged around the outer wall of the first non-standard waveguide section, and several metal protrusions are evenly arranged in a periodic layout rule; the female connection part includes the first non-standard waveguide section. Two standard waveguides, a second impedance transformation section and an enlarged cavity structure, the second impedance transformation section is located between the second standard waveguide and the enlarged cavity structure, and the enlarged cavity structure is arranged at the end of the second impedance transformation section; the male connection part One end with a periodic metal convex array is inserted into the enlarged cavity structure of the female connection part to form a compact flangeless waveguide connection structure as a whole. The volume of the invention is greatly reduced, which is more conducive to miniaturization design and flexible layout, and the plug-in design can realize more convenient and flexible assembly.

Description

technical field [0001] The invention relates to a compact blue-free waveguide connection structure and a design method, which can be used in various microwave components and system connection structures, and belongs to the microwave technical field. Background technique [0002] Waveguide is an important transmission line for transmitting microwave signals. The most commonly used is a rectangular waveguide, including a rectangular metal tube and a flange. The flanges are located at both ends of the metal tube and are used for connection and fixation between the waveguides. The metal tube and the flange surface Vertical and centered, the rectangular section and flange surface of the waveguide in different frequency bands are different in size. Waveguide transmission lines are widely used in satellite payload systems due to their advantages of low insertion loss and high power capacity. Due to the limitation of the space of the satellite payload platform and the carrying capa...

AI Technical Summary

Problems solved by technology

If the consistency of the welding process is difficult to ensure, the electromagnetic transmission performance of the welded flangeless waveguide connection is difficult to predict and guarantee

On the other hand, welding is an irreversible process. Once the welding is completed, the structure and position of the waveguide cannot be changed, which is not conducive to the flexible disassembly and assembly of various components and components in the system, and is not conducive to the overall design and flexible layout of the system. low mechanical stability

If the waveguide direct plug-in design is adopted, due to the existence of machining errors and roughness, ideal electrical contact cannot be formed in practice, and there will be air gaps between the plug-in contact surfaces, causing electromagnetic leakage and affecting electromagnetic transmission performance

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