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Short-range radio-telemetry for electronic identification, using modulated RF backscatter

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3 Author(s)
Koelle, Alfred R. ; University of California, Los Alamos, N.Mex. ; Depp, Steven W. ; Freyman, R.W.

An electronic identification system which uses modulated backscatter from an RF beam-powered tag is described. A subcarrier is used in the return signal format to allow separation from the background clutter and to allow use of a novel method to avoid RF phase problems.

Published in:

Proceedings of the IEEE  (Volume:63 ,  Issue: 8 )