Raytheon Company

James E Rhein

Edward A Geyh

Robert P Zagrodnick

A phased array antenna having an array of antenna elements, an array of phase shifter sections, each one thereof being associated with a corresponding one of the antenna elements, and a cold-plate having a pair of surfaces, one of the surfaces having the array of phase shifter sections mounted, and thermally coupled, thereto and an opposite one of the pair of surfaces having thermally conductive posts projecting outwardly therefrom, each one of the posts being disposed behind a corresponding one of the plurality of mounted phase shifter sections. A heat sink plate is thermally coupled to distal ends of the posts. The cold-plate has a plurality of feeds passing therethrough. The phased array antenna includes a power/radio frequency energy distribution section mounted to said opposite one of the pair of cold plate surfaces for distributing power and radio frequency energy among the phase shifter sections mounted to the cold plate. The radio frequency energy distribution section comprises a plurality of stacked printed circuit boards and the posts pass through the stacked printed circuit boards to the heat sink plate and radio frequency energy is coupled to the phase shifter section though coupling power dividers and slots provided in the stacked, power/radio frequency energy distribution section printed circuit boards. An array of antenna elements is provided having an array of patch radiators. A conductive layer is provided having an array of cavities disposed therein, each one of the patch radiators being disposed over an associated one of the cavities.

Growing community of inventors

Westboro, MA, United States of America

James E Rhein