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LONG-RANGE UWB REMOTE POWERING CAPABILITY AT FCC REGULATED LIMIT USING MULTIPLE ANTENNAS

United States Patent Application

20160048710
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A method and apparatus for remote UWB powering of passive RFID tags, sensors, and other electronic devices at long ranges and still at FCC low emission power limits utilizes a distributed multi-transmitter system configured for spotforming. The UWB powering signal is different from the signal that is used for communication between the tag and its reader. By de-coupling the powering task from the communication task, one is able to increase the range of communication between the tag and the reader, as readers can be designed to have excellent receiver sensitivities, while powering range is increased by use of multiple "spot-forming" antennas over a large area.
Nekoogar, Faranak (San Ramon, CA), Dowla, Farid U. (Castro Valley, CA), Benzel, David M. (Gilmer, TX), Twogood, Richard E. (San Diego, CA)
Lawrence Livermore National Security, LLC (Livermore CA)
14/ 331,057
July 14, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the U.S. Department of Energy and Lawrence Livermore National Security, LLC, for the operation of Lawrence Livermore National Laboratory.