Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1991-08-16
1993-03-02
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342424, H01Q 322, H01Q 324, H01Q 326
Patent
active
051913402
ABSTRACT:
A distributed network that compensates for the effects of interelement coupling in a multielement antenna array is inserted between the output of an antenna array and the inputs of a receiver system. Within the distributed network are a plurality of couplers interconnected by transmission lines serving as phase shifters. The coupling factors of the various couplers and the lengths of the transmission lines are selected so as to apply voltage components of specific amplitudes and phase to the antenna ports. The values of the amplitudes and phases of these voltage components are such as to neutralize the components of the voltages at the output of the antenna array which are caused by the spatial couplings between the elements of the antenna array.
REFERENCES:
patent: 4855748 (1989-08-01), Brandao et al.
patent: 4876548 (1989-10-01), Lopez
patent: 5003315 (1991-03-01), Skatvold, Jr.
patent: 5028930 (1991-07-01), Evans
Brandao Ruy L.
Parker Anthony
Spires Randall C.
Allied-Signal Inc.
Blum Theodore M.
Massung Howard G.
Paschburg Donald B.
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