Millimeter wave rectangular-circular transition integrated corrugated horn antenna and processing method

Abstract

The invention discloses a millimeter wave rectangular-circular transition integrated corrugated horn antenna and a processing method and adopts integrated disposable electroforming for processing. A shell is internally provided with an inner cavity communicating from top to bottom in the shell, and the inner cavity consists of a corrugated inner wall radiation section, a circular waveguide extension section, a rectangular-circular transition waveguide section and a rectangular waveguide extension section from top to bottom, and one end of the port of the rectangular waveguide extension sectionin the shell is assembled with a connection part through sleeve joint. The corrugated horn antenna is electroformed by an inner core with the structure the same as that of the inner cavity, the integrated structure is adopted instead of various independent parts, the discontinuity of inner section change and deteriorated smoothness of a transition part caused by the processing dimension difference of all components, assembly and positioning error and other reasons are avoided, voltage standing wave ratio is reduced and antenna performance is improved, and compared with the traditional discrete part scheme, the scheme also reduces the requirement on processing accuracy properly. In the invention, the antenna performance, production technology complexity and time cost are all improved.

Description

technical field [0001] The invention belongs to the field of microwave technology, and specifically relates to a rectangular-circle transition integrated corrugated horn antenna working in the millimeter wave frequency band and a processing method thereof. Background technique [0002] Because the corrugated horn antenna has the advantages of reducing side lobes, improving the phase and amplitude symmetry of the radiation field, and reducing cross-polarization, it has been widely used as an important feed source form in engineering practices such as aerospace and meteorological remote sensing. During use, the traditional corrugated horn antenna needs to pass through the circular waveguide section matching the working wavelength after the expansion radiation section containing the corrugated inner wall, and connect with the additionally configured circular section port of the rectangular transition waveguide. The rectangular section of the rectangular transition waveguide The...

AI Technical Summary

Problems solved by technology

[0005] Second, in terms of the volume and weight of the system, the traditional corrugated horn antenna is also affected by the processing technology and combination form

The resulting additional volume and mass will bring more difficulties and restrictions to the design work in applications that require weight and volume such as spaceborne and airborne equipment

[0006] Third, in terms of technology and working hours, the traditional corrugated horn antenna structure scheme requires high machining accuracy, which increases the complexity of the process, prolongs the processing time, reduces the processing efficiency and increases the processing cost

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