Patent ID: 7400304
Filing Date: 2008-07-15
Classification: H01Q

Abstract:
1. An antenna, comprising a first group of part-spherical dielectric lenses each supported on a first, substantially annular portion of a conducting ground plane surrounding a well-like portion of the antenna, each of the lenses of the first group having a plurality of associated switchably selectable antenna feed elements disposed around the periphery of the lens for injecting signals into and/or receiving signals emerging from at least one sector of the lens, wherein lenses of the first group and their associated feed elements have different orientations and are operable to provide coverage in respect of different regions, and a second group of one or more spherical or part-spherical dielectric lenses and associated switchably selectable antenna feed elements located within said well-like portion of the antenna, oriented and operable to provide coverage to a region other than those covered by lenses of the first group.