Title :
Remotely powered addressable UHF RFID integrated system
Author :
Curty, Jari-Pascal ; Joehl, Norbert ; Dehollain, Catherine ; Declercq, Michel J.
Author_Institution :
Swiss Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
This 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 μm 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.
Keywords :
UHF integrated circuits; amplitude shift keying; radiofrequency identification; rectifiers; transponders; 0.5 micron; 2.45 GHz; 4 W; UHF RFID integrated system; amplitude shift keying; backscattering modulation; effective isotropically radiated power; inductive matching; on-off keying modulation; radio frequency identification transponder; rectifier design; silicon-on-sapphire technology; transponder communication; transponder integrated circuit; wireless power transmission; Amplitude modulation; Amplitude shift keying; Application specific integrated circuits; Backscatter; Frequency; Power transmission; Radiofrequency identification; Switches; Transponders; Wireless sensor networks; Backscattering modulation; RFID; low power; low voltage; passive transponder; radio frequency identification; wireless power transmission;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2005.857352
