Title :
Chipless UWB RFID Tag Detection Using Continuous Wavelet Transform
Author :
Lazaro, Antonio ; Ramos, A. ; Girbau, D. ; Villarino, R.
Author_Institution :
Electron., Electr. & Automatics Eng. Dept., Univ. Rovira i Virgili, Tarragona, Spain
fDate :
7/3/1905 12:00:00 AM
Abstract :
The basic theory of operation of ultra wideband radio identification systems is explained in this letter. An experimental setup based on an ultrawideband radar working as a reader is proposed to measure time-coded tags. A method based on the Continuous Wavelet Transform is developed in order to overcome detection problems associated to a low signal-to-noise ratio at the receiver. Experimental results obtained with the ultrawideband radar and using an ultrawideband antenna connected to a delay line to emulate a tag are presented. A good improvement is achieved with this processing method.
Keywords :
object detection; radio receivers; radiofrequency identification; ultra wideband antennas; ultra wideband radar; wavelet transforms; chipless UWB RFID tag detection; chipless ultrawideband radiofrequency identification tag detection; continuous wavelet transform; radio receiver; signal-to-noise ratio; time-coded tags; ultrawideband antenna; ultrawideband radar; Continuous wavelet transforms; Delay; Radar antennas; Radiofrequency identification; Reflection; Continuous Wavelet Transform (CWT); radio frequency identification (RFID); ultrawideband (UWB);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2157299
