Patent ID: 6049312
Filing Date: 2000-04-11
Classification: H01Q

Abstract:
An antenna system for producing a plurality of beams including a first beam and a second beam, comprising:a first element, a second element, a first feed and a second feed; andwherein said first element and said first feed are positioned for propagation of radiation between said first element and said first feed for formation of said first beam reflected by said first element;said second element and said second feed are positioned on opposite sides of said first element for propagation of radiation between said second element and said second feed for formation of said second beam reflected by said second element, said positioning of said second element and said second feed on opposite sides of said first element resulting in a set of interfering beams comprising at least one interfering beam;said first element is substantially transparent to radiation of said second feed for illuminating said second element with the radiation of said second feed while reflecting a portion of the power of the radiation of said second feed as said one interfering beam;said first element and said first feed constitute a first subsystem providing said first beam of said antenna system, said second element and said second feed constitute a second subsystem providing said second beam of said antenna system; andsaid antenna system includes means for positioning each of said subsystems with three degrees of freedom of translation and three degrees of freedom of rotation to enable placement of said subsystems relative to each other to minimize the size of the antenna system while enabling a scanning of said interfering beams away from areas of coverage of the beams of said subsystems; andsaid second feed is angled from said first feed to direct said one interfering beam away from an area of coverage of said first beam.