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Method of remote powering and detecting multiple UWB passive tags in an RFID system

United States Patent

May 29, 2012
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific "interrogating codes" to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique "response code" so as to be detected by an UWB system using radar methods.
Dowla; Farid U. (Castro Valley, CA), Nekoogar; Faranak (San Ramon, CA), Benzel; David M. (Livermore, CA), Dallum; Gregory E. (Livermore, CA), Spiridon; Alex (Palo Alto, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
11/ 897,773
August 31, 2007
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.