Title :
A novel method of reading multi-resonator based chipless RFID tags using an UWB chirp signal
Author :
Koswatta, Randika V. ; Karmakar, Nemai C.
Author_Institution :
Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Clayton, VIC, Australia
Abstract :
A novel method for reading multi-resonator based chipless RFID tags using an UWB linear chirp signal is presented in this paper. For the reader, a coherent frequency modulated continuous wave (FMCW) bi-static radar receiver architecture is used. A signal processing technique based on Hilbert transform is used to decode tag´s data by detecting both amplitude and phase information. Accurate detection of the tag is achieved in simulations. With this interrogation technique, a very low cost chipless RFID reader with only one voltage controlled oscillator (VCO) is possible. In contrast to previous generation readers, this reader does not need any calibration tag to decode data.
Keywords :
CW radar; FM radar; Hilbert transforms; decoding; radar receivers; radar signal processing; radiofrequency identification; resonators; ultra wideband radar; voltage-controlled oscillators; Hilbert transform-based signal processing technique; UWB linear chirp signal; amplitude information; chipless RFID reader; coherent frequency modulated continuous wave bistatic radar receiver architecture; generation readers; interrogation technique; phase information; reading multiresonator-based chipless RFID tag detection; tag data decoding; voltage controlled oscillator; Chirp; Frequency measurement; RFID tags; Semiconductor device measurement; Transforms; Voltage-controlled oscillators; Hilbert transform; RFID; Ultra-wideband; chipless RFID; linear chirp;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
