| 摘要 |
<p>A thinned multiple beam phased array antenna which includes, in a sending array configuration, an antenna element (30), a beam forming network (26), feeding circuits (7), a phase and gain controller (9), and a phase control algorithm storage unit (10). A feeding circuit (7) is coupled to an associated antenna element (30) and the beam forming network (26), and passes a beam forming signal between the antenna element (30) and the beam forming network (26). The antenna element (30) preferably includes a plurality of radiators (1) and a plurality of band pass filters (2), wherein a band pass filter is dedicated to each radiator. The beam forming network (26) may include a stripline (8) power divider and a power distributor. The feeding circuits preferably include a plurality of impedance-matching isolators (3), a plurality of solid state power amplifiers (4), a plurality of n:1 signal combiners (13), a plurality of monolithic microwave integrated circuits (MMICs) (5), and a plurality of phase shifters (6). This configuration is integrated into a single system which provides flexibility of beam placement, narrow beam width, simultaneous, independent multiple beams and reduces the overall system weight and cost. <IMAGE> <IMAGE> <IMAGE> <IMAGE></p> |
