Disk type rotary joint

Abstract

The invention discloses a disk type rotary joint. The disk type rotary joint comprises a lug boss, a cover plate, a shell, and a first power divider strip line and a second power divider strip line; the first power divider strip line and the second power divider strip line have two outlet ends; the outlet end of the first power divider strip line is connected with two first rod parts; the outlet end of the second power divider strip line is connected with two second rod parts; a connecting structure is arranged between each first rod part and each second rod part, and the connecting structureis used for realizing electrical connection between the first rod part and the corresponding second rod part; and the included angle of at least one of the two outlet ends of the first power divider strip line and the second power divider strip line in the circumference is smaller than 180 degrees. The disk type rotary joint provided by the invention, by improving a feed power divider into a one-to-two power divider with two different outlet field angles, greatly lowers feeding complexity of the one-to-four power divider used for the conventional rotary joint; and meanwhile, the problem of quite high microwave signal fluctuations in the rotation process of the rotary joint is also solved.

Description

Technical field [0001] The invention relates to the field of signal connection. More specifically, it relates to a disc rotary joint. Background technique [0002] Disc rotary joints are widely used in air traffic control radars and warning radars. They are used to connect mechanical scanning antennas and their feeders in radars. They are one of the important components of radars. When the radar requires multi-channel microwave signals in the S band and below to work independently, the disc rotary joint is the best choice. Disc rotary joints generally use a one-to-four power divider. The disadvantage of this joint is that the power supply is more complicated. Each feeder power divider (one-to-four power divider A / B) needs four metal rods to feed in parallel. Coupling metal ring (metal ring A / B). If the feeder power divider is changed to two identical one-to-two power dividers, although the feeding becomes simple at this time, each feeder power divider only needs two metal rods...

AI Technical Summary

Problems solved by technology

Disc rotary joints generally use a one-to-four power divider. The disadvantage of this joint is that the feed is more complicated. Each feed power divider (one-to-four power divider A / B) needs four metal rods to feed power in parallel. Coupling Metal Ring (Metal Ring A / B)

If the feed power divider is changed to two identical one-point-two power dividers, although the feed becomes simple at this time, each feed power divider only needs two metal rods to feed power in parallel, but at this time During the rotation of the rotary joint, the microwave signal fluctuates greatly, which makes it unusable in engineering

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