Patent ID: 7280084
Filing Date: 2007-10-09
Classification: H01Q

Abstract:
1. Antenna system for simultaneously generating two beams, wherein the antenna system consists of first and second antennas coupled via a coupler and the antennas are arranged to generate electrically separated beams with the characteristics of a combined antenna, the coupler comprising: a first hybrid coupler connected to both a fourth hybrid coupler and a first phase shifter, the first hybrid coupler being connectable to the first antenna; a second hybrid coupler connected to both a third hybrid coupler and a second phase shifter, the second hybrid coupler being connectable to the second antenna; the third hybrid coupler also connected to the first phase shifter; the fourth hybrid coupler also connected to the second phase shifter; wherein a different phase is applied per antenna and the antennas are arranged to shift the generated beams to cover different areas; wherein the antennas are arranged to generate a first beam shifted about −45° and a second beam shifted about +45°; and wherein the antennas are arranged to generate non-overlapping beams.