Curty, J.-P.Joehl, N.Dehollain, C.Declercq, M.2007-10-082007-10-082007-10-08200510.1109/JSSC.2005.8573522-s2.0-27844601513https://infoscience.epfl.ch/handle/20.500.14299/12733WOS:0002329470000097343This paper presents a fully integrated remotely powered and addressable radio frequency identification (RFID) transponder working at 2.45 GHz. The achieved operating range at 4 W effective isotropically radiated power (EIRP) base-station transmit power is 12 m. The integrated circuit (IC) is implemented in a 0.5 "m silicon-on-sapphire technology. A state-of-the-art rectifier design achieving 37% of global efficiency is embedded to supply energy to the transponder. The necessary input power to operate the transponder is about 2.7 μW. Reader to transponder communication is obtained using on-off keying (OOK) modulation while transponder to reader communication is ensured using the amplitude shift keying (ASK) backscattering modulation technique. Inductive matching between the antenna and the transponder IC is used to further optimize the operating range. © 2005 IEEE.0.5 micron2.45 GHz4 WUHF RFID integrated systemamplitude shift keyingbackscattering modulationeffective isotropically radiated powerinductive matchingon-off keying modulationradio frequency identification transponderrectifier designsilicon-on-sapphire technologytransponder communicationtransponder integrated circuitwireless power transmissionUHF integrated circuitsamplitude shift keyingradiofrequency identificationrectifierstransponderstext::journal::journal article::research article