A double-channel coaxial rotary joint

Abstract

A dual-channel coaxial rotary joint, which is conducive to reducing the size of the structure and processing, is conducive to stable rotation, and satisfies microwave transmission in a wide frequency band with excellent performance indicators, including rotating ends and fixed ends, flanges, and the first channel is fixed The end interface and the second channel fixed end interface, the bearing housing, the bearing, the rotating body first channel rotating end interface and the second channel rotating end interface, the first channel rotating end inner conductor, the first channel fixed end inner conductor, the first channel The inner conductor at the rotating end of the first channel is connected to the inner conductor at the fixed end of the first channel through the rotatable fit between the male pin, that is, the inner center pin, and the petal-type female pin, that is, the petal center pin, and the inner conductor at the rotating end of the first channel The conductor, the inner conductor at the fixed end of the first channel and the bearing have the same axis line, and the inner conductor at the rotating end of the second channel and the inner conductor at the fixed end of the second channel are connected by shrapnel and links in the hollow structure of the rotating body. The rotatable fit between the rings is connected.

Description

technical field [0001] The invention relates to a microwave device, in particular to a dual-channel coaxial rotary joint, which is beneficial to reduce the structural size and processing, and is beneficial to stable rotation, and satisfies microwave transmission in a wide frequency band with excellent performance indicators. Background technique [0002] At present, coaxial rotary joints are mostly used in radar and rotary antennas, and are often used in L, C, S, X, and Ku bands. The structure is mostly a single channel, or a single channel plus one or more waveguides. The frequency range of the waveguide channel is relatively narrow. , and the structure is complex and the size is large, the microwave transmission in the broadband band is limited, the processing requirements are high, the difficulty is great, and the performance is unstable. L, C, S, X, Ku indicate microwave frequency code, L corresponds to 1-2GHz and wavelength 30-15cm; C corresponds to 4-8GHz and wavelengt...

AI Technical Summary

Problems solved by technology

[0002] At present, coaxial rotary joints are mostly used for radar and rotary antennas, and are often used in L, C, S, X, Ku bands. The structure is mostly single channel, or a single channel plus one or more waveguides. The frequency range of the waveguide channel is relatively narrow. , and the structure is complex and the size is large, the microwave transmission restrictions on the broadband band are high, the processing requirements are high, the difficulty is large, and the performance is unstable

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