Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1995-08-08
1997-02-11
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
H01Q 322
Patent
active
056025548
ABSTRACT:
A radar system which uses an active phased-array antenna achieves improved clutter improvement factor (CIF) by powering the various transmit-receive (TR) modules of the antenna with direct voltage (DC) derived from a plurality of phases of the power-line alternating current (AC). Each TR module receives power which originates with one phase of the source AC. The phases are selected so that the modulation of the radio-frequency (RF) signals by each TR module tends to cancel in the summed signal from the array antenna.
REFERENCES:
patent: 4806937 (1989-02-01), Peil
patent: 5173706 (1992-12-01), Urkowitz
patent: 5280297 (1994-01-01), Profera, Jr.
patent: 5339086 (1994-08-01), DeLuca et al.
"Transformer for AC/DC Power Supply Using 15 Phase Full Bridge", by Guenther et al, published at pp. 357-363 of Proceedings of the Electrical Manufacturing Coil Windings Show, Cincinnati, OH, 1992, of the International Coil Windings Association.
Cepas Bruce M.
Ferrante John G.
Holzman Eric L.
Lew Wilbur
Issing Gregory C.
Martin Marietta Corp.
Meise W. H.
Nieves C. A.
Young S. A.
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