Non-flange waveguide connection structure and design method

Abstract

The invention discloses a non-flange waveguide connecting structure, which comprises a male connecting part and a female connecting part, and is characterized in that the male connecting part comprises a first waveguide and a periodic metal convex body array, wherein the periodic metal convex body array is arranged on the peripheral surface of the outer wall of the tail end of the first waveguide,and a plurality of metal convex bodies are respectively and uniformly arranged according to a periodic layout rule; the female connecting part comprises a second waveguide and an expanded cavity structure; the expanded cavity structure is arranged at the tail end of the second waveguide, and the end, provided with the periodic metal convex body array, of the male connecting part is inserted intothe expanded cavity structure of the female connecting part to form the whole non-flange waveguide connecting structure. Compared with a traditional waveguide flange, the non-flange waveguide connection structure provided by the invention has the advantages that the size is greatly reduced, the structure layout is more facilitated, and more convenient and flexible assembly can be realized throughthe pluggable design.

Description

technical field [0001] The invention relates to a flangeless waveguide connection structure and a design method, which can be used in various microwave components and system connection structures, and belongs to the field of microwave technology. Background technique [0002] Waveguide is an important transmission line for transmitting microwave signals, and the most commonly used one is a rectangular waveguide, including a rectangular metal tube and a flange. Vertical, centered, waveguides with different rectangular cross-sections and flanges with different sizes for different frequency bands. Due to the advantages of low insertion loss and high power capacity, waveguide transmission lines are widely used in satellite payload systems. Due to the limitation of the space of the satellite payload platform and the carrying capacity of the vehicle, volume and weight have become important considerations in payload design. A large number of connection structures are required in ...

AI Technical Summary

Problems solved by technology

If the consistency of the welding process is difficult to guarantee, 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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