Waveguide coaxial converter

Abstract

The invention discloses a waveguide coaxial converter, and belongs to the technical field of waveguide coaxial conversion equipment. The upper side is an upper waveguide wide edge, the lower side is alower waveguide wide edge, the left side and the right side are a left waveguide narrow edge and a right waveguide narrow edge, the front side is a waveguide end face, the rear side is open to form awaveguide port, and a waveguide cavity is formed in the waveguide body; the impedance matching block is located in the waveguide cavity, a first gap is formed between the front end face of the impedance matching block and the inner side wall of the waveguide end face, the impedance matching block is connected to the lower waveguide wide edge, and the impedance matching block, the waveguide end face and the lower waveguide wide edge are integrally connected or integrally machined; the coaxial connector is installed on the waveguide end face, the coaxial connector comprises a coaxial inner conductor, a through hole is formed in the waveguide end face, one end of the coaxial inner conductor penetrates through the through hole and is connected with the impedance matching block, and a matchingprotruding part forming a second gap with the inner side wall of the waveguide end face is arranged on the coaxial inner conductor. The waveguide coaxial converter can overcome the assembly error andimprove the standing wave performance.

Description

technical field [0001] The invention relates to the technical field of waveguide-coaxial conversion equipment, in particular to a waveguide-coaxial converter. Background technique [0002] Waveguide-coaxial converters are widely used in radar, communication equipment and other equipment to realize low-loss transition of microwave signals from waveguide system to coaxial system or from coaxial system to waveguide system. At present, the existing waveguide coaxial converter structure such as figure 1 As shown, a matching block 7 is installed in the waveguide cavity in the waveguide 6, and then connected to the matching block 7 through pins. Usually, the matching block 7 is formed by processing first, and then the matching block 7 is fixed in the waveguide cavity by screws 8 In order to ensure the standing wave performance of the waveguide coaxial converter and avoid short circuit, the gap formed between the matching block 7 and the inner wall of the front side of the waveguid...

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Problems solved by technology

In addition, the matching block 7 is processed independently. Although the processing accuracy of the matching block 7 can be ensured, when the matching block 7 is assembled in the waveguide cavity, there are assembly errors and it is difficult to avoid assembly errors, so that the standing wave index of the waveguide coaxial converter Generally, the difference in the horizontal direction of the C-band is 0.1mm, and the standing wave influence is about 0.05-0.15, and the higher the frequency, the more obvious it is. Moreover, it is difficult to achieve a good Standing wave index, and debugging requires more time and effort

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