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Tags, wireless communication systems, tag communication methods, and wireless communications methods

United States Patent

7,106,173
September 12, 2006
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Tags, wireless communication systems, tag communication methods, and wireless communications methods are described. In one aspect, a tag includes a plurality of antennas configured to receive a plurality of first wireless communication signals comprising data from a reader, a plurality of rectifying circuits coupled with. respective individual ones of the antennas and configured to provide rectified signals corresponding to the first wireless communication signals, wherein the rectified signals are combined to produce a composite signal, an adaptive reference circuit configured to vary a reference signal responsive to the composite signal, a comparator coupled with the adaptive reference circuit and the rectifying circuits and configured to compare the composite signal with respect to the reference signal and to output the data responsive to the comparison, and processing circuitry configured to receive the data from the comparator and to process the data.
Scott; Jeff W. (Pasco, WA), Pratt; Richard M. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
10/ 336,086
January 3, 2003
GOVERNMENT RIGHTS STATEMENT This invention was made with Government support under Cantract DE AC0676RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.