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Long-range, full-duplex, modulated-reflector cell phone for voice/data transmission

United States Patent

August 13, 2002
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A long-range communications apparatus utilizing modulated-reflector technology is described. The apparatus includes an energy-transmitting base station and remote units that do not emit radiation in order to communicate with the base station since modulated-reflector technology is used whereby information is attached to an RF carrier wave originating from the base station which is reflected by the remote unit back to the base station. Since the remote unit does not emit radiation, only a low-power power source is required for its operation. Information from the base station is transmitted to the remote unit using a transmitter and receiver, respectively. The range of such a communications system is determined by the properties of a modulated-reflector half-duplex link.
Neagley; Daniel L. (Albuquerque, NM), Briles; Scott D. (Los Alamos, NM), Coates; Don M. (Santa Fe, NM), Freund; Samuel M. (Los Alamos, NM)
The Regents of the University of California (Los Alamos, NM)
09/ 760,193
January 12, 2001
STATEMENT REGARDING FEDERAL RIGHTS This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy to The Regents of The University of California. The government has certain rights in the invention.