Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1998-02-25
2000-01-04
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342354, 342374, H01Q 324
Patent
active
060115122
ABSTRACT:
A thinned multiple beam phased array antenna which includes, in a sending array configuration, an antenna element, beam forming network, feeding circuits, a phase and gain controller, and a phase control algorithm storage unit. A feeding circuit is coupled to an associated antenna element and the beam forming network, and passes a beam forming signal between the antenna element and the beam forming network. The antenna element preferably includes a plurality of radiators and a plurality of band pass filters, wherein a band pass filter is dedicated to each radiator. The beam forming network preferably includes a stripline power divider and a power distributor. The feeding circuits preferably include a plurality of impedance-matching isolators, a plurality of solid state power amplifiers, a plurality of n:1 signal combiners, a plurality of monolithic microwave integrated circuits (MMICs), and a plurality of phase shifters. 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.
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Phan Dao L.
Space Systems Loral, Inc.
Tarcza Thomas H.
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