Dual-frequency rotary joint used capable of realizing S single-frequency and X single-frequency transmission

Abstract

The invention relates to a dual-frequency rotary joint used for S single frequency and X single frequency transmission, including an X frequency band joint and an S frequency band joint. The X frequency band joint mainly includes a circular waveguide, a rectangular waveguide and a short-circuit cylinder. The two ends of the circular waveguide are connected to each other, the rectangular waveguide is arranged on the side circular surface of the two ends of the circular waveguide, and the rectangular waveguide and the circular waveguide are connected to each other through the coupling hole; the S-band joint mainly includes a coaxial waveguide, two work points device, magic T and waveguide elbow, the coaxial waveguide and the circular waveguide are coaxially arranged, and are located outside the circular waveguide, forming a transmission channel between the coaxial waveguide and the circular waveguide, and the two power dividers are respectively located on the coaxial Both ends of the waveguide are connected to the transmission channel between the coaxial waveguide and the circular waveguide, and the two horizontal signal ports of the magic T are connected to the two signal ports of the two-power splitter through the waveguide elbow. The invention is a rotary joint capable of simultaneously transmitting high-power radio frequency signals of S and X frequency bands, so as to solve the requirement of dynamic transmission of uplink high-power signals of S+X dual-frequency co-constructed antennas.

Description

technical field [0001] The invention relates to a microwave component, in particular to a dual-frequency rotary joint capable of simultaneously transmitting S single frequency and X single frequency. Background technique [0002] The radio frequency signal rotary joint is the core component of the radar feeder system. Its main job is to ensure that the feeder system device (rotary joint) used for high-power microwave signal transmission rotates relative to the mechanical position (generally 360o unlimited) movement. The transmission signal is electrically low-loss and smoothly transmitted. The design work of the rotary joint is very complicated and cumbersome. The problem often encountered by the rotary joint designer is: to give the size limit of the rotary joint, and then design the electrical scheme. This requires the designer to combine the design theory and working principle of the rotary joint with the actual workplace, and creatively propose a feasible solution. [...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a rotary joint with small insertion loss, low VSWR, large power capacity, and capable of simultaneously transmitting high-power radio frequency signals in two frequency bands of S and X in order to solve the problem of S Requirements for dynamic transmission of uplink high-power signals with +X dual-frequency co-constructed antenna

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