Patent ID: 7576703
Filing Date: 2009-08-18
Classification: H01Q

Abstract:
1. A frequency scanned waveguide antenna, comprising: a plurality of radiating waveguides configured as a flat plate array, each radiating waveguide including an enclosure having a front wall and a back wall opposite the front wall, the front wall including a slot configured for radiating and receiving an electromagnetic signal; a sinuous feed waveguide coupled to each waveguide included in the plurality of radiating waveguides via a slot coupling mechanism, the sinuous feed waveguide including an enclosure having a front wall and a back wall opposite the front wall, the front wall of the sinuous feed waveguide being oriented towards the back walls of the plurality of radiating waveguides, the front wall of the sinuous feed waveguide further including a plurality of slot couplers, the slot couplers each configured for feeding an electromagnetic signal to the plurality of radiating waveguides via a plurality of corresponding feed slots formed by the back walls of the plurality of radiating waveguides; and a reactive buffering region coupled between the flat plate array and the front wall of the sinuous feed waveguide, wherein the sinuous feed waveguide and the plurality of radiating waveguides are oriented as parallel waveguides.