Low cost rectangular waveguide rotary joint having low friction

Details Low cost rectangular waveguide rotary joint having low friction Low cost rectangular waveguide rotary joint having low friction

1995-12-27

1998-07-14

Lee, Benny T.

Wave transmission lines and networks

Long line elements and components

Waveguide elements and components

333261, H01P 106

Patent

active

057810877

ABSTRACT:
A rectangular waveguide rotary joint that allows limited mechanical rotation of two rectangular waveguides around a common longitudinal axis. The joint comprises a first rectangular waveguide having a first waveguide flange and a second rectangular waveguide having a second waveguide flange, wherein the second waveguide flange is disposed adjacent to the first waveguide flange with an air gap disposed therebetween. An RF choke is formed in the waveguide flanges for reducing RF leakage caused by the air gap, and a low friction spacer system for separating the first and second waveguides to maintain relative alignment of the waveguides during rotation and maintain a substantially constant separation between the waveguides. The waveguide rotary joint provides for a low voltage standing wave ratio (VSWR) and low insertion loss exhibited over a +/-30 degree rotation range.

REFERENCES:
patent: 2521818 (1950-09-01), Aron
patent: 2597143 (1952-05-01), Aron
patent: 2736867 (1956-02-01), Montgomery
patent: 2969513 (1961-01-01), Brennalt
patent: 3001159 (1961-09-01), Hilsinger, Jr.
patent: 4625188 (1986-11-01), Bourgie

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