Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1990-09-27
1991-03-26
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
343754, H01Q 322, H01Q 324, H01Q 326
Patent
active
050033158
ABSTRACT:
A progressive phase feed transmission line network for use with a Rotman-Turner lens is composed of a plurality of feed ports for receiving or transmitting energy from or to the lens, a pair of control ports, a plurality of different sets of transmission line segments with the segments in the same sets being of substantially equal lengths, and a plurality of power directors for splitting or combining energy depending upon whether the network is operating in a "receive" or "transmit" mode. Different phase delays are interposed in the network to provide a passive arrangement which can operate in the "receive" mode to determine directionality of energy received by an antenna array and fed through a Rotman-Turner lens to the transmission line network or can operate in the "transmit" mode in combination with adjusting of a phase shifter to directionally steer the energy launched into space by the antenna array after being fed from the network through the lens to the antenna array.
REFERENCES:
patent: 3192530 (1965-06-01), Small
patent: 3400405 (1968-09-01), Patterson, Jr.
patent: 3568184 (1971-03-01), Drabowitch
patent: 3761936 (1973-09-01), Archer et al.
patent: 3852761 (1974-12-01), Bogner
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patent: 4532520 (1985-07-01), Hislop
patent: 4612548 (1986-09-01), Beltran
patent: 4675682 (1987-06-01), Adam et al.
W. Rotman et al., "Wide-Angle Microwave Lens for Line Source Appls.", IEEE rans. on Antennas and Propagation, 1963, vol. AP-11, pp. 623-632.
Blum Theodore M.
Gilbert Harvey A.
Sheinbein Sol
Sliwka Melvin J.
The United States of America as represented by the Secretary of
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