Westinghouse Electric Corporation

United States of America As Represented by the Secretary of the Air Force

David W Parry

John H Staehlin

Lanson Y Shum

Richard S Konapelsky

Douglas K Comstock

Michael A Mongilio

Mark O'Clair

Frank B Gabranski

Gary N Bonadies

Albert F Zirkle

RF manifolding for a radar antenna which allows tight spacing of Phase Control Modules (PCMs) is disclosed. The manifolding consists of ridged branch manifold waveguides to which ridged cross waveguide sections are installed. Each branch manifold waveguide of the present invention has ridges on one broad wall, coupling slots on another broad wall, and a plurality of cross waveguides connected on the side having the coupling slots. The cross waveguides are likewise provided with ridges on one broad wall, which are oriented at right angles to the ridges of the branch manifold waveguide, and have coupling slots on the opposite broad wall which correspond to the coupling slots of the branch manifold waveguide. The PCMs are mounted on the end of each cross waveguide, parallel to the ridges thereof. The branch manifold waveguide assemblies, comprising the branch manifold waveguides, the cross waveguides, and the PCMs, are installed on the antenna in parts and oriented back-to-back, with their ridges contacting to enclose a space defined by the walls of the two branch manifolds. The space enclosed between the branch manifold waveguides of the assembled pair by virtue of these ridges may be used for fluid cooling in high power antenna applications.

Back-to-back ridged branch manifold structure for a radar frequency

An apparatus for stopping a rotating antenna shaft at a distinct position intermediate two end stop positions 23, 24. Paddle 12 on the rotating shaft 21 cooperates with intermediate stop assembly 26 to arrest bi-directional shaft rotation at an intermediate point when such stopping is desired, the intermediate stop assembly being activated by springs 38, 39 and deactivated by action of solenoids 30, 31.

Antenna shaft positioning device

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Ellicott City, MD, United States of America

David W Parry