Author, as appears in the article.: Lazaro A; Ramos A; Girbau D; Villarino R
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Girbau Sala, David / Lázaro Guillén, Antonio Ramon / Ramos Gadea, Ana Maria / Villarino Villarino, Ramón Maria
Keywords: Wavelet transforms Ultrawideband (uwb) Ultra-wideband radio Ultra-wideband (uwb) Time domain analysis Threshold detectors Temperature sensors Temperature sensor Signal to noise ratio Signal receivers Signal processing technique Signal processing Signal detection Radio waves Radio frequency identification (rfid) Low signal-to-noise ratio Gain compensations Continuous wavelet transforms Continuous wavelet transform (cwt) Continuous wavelet transform Chipless
Abstract: This letter presents signal processing techniques to detect a passive thermal threshold detector based on a chipless time-domain ultrawideband (UWB) radio frequency identification (RFID) tag. The tag is composed by a UWB antenna connected to a transmission line, in turn loaded with a biomorphic thermal switch. The working principle consists of detecting the impedance change of the thermal switch. This change occurs when the temperature exceeds a threshold. A UWB radar is used as the reader. The difference between the actual time sample and a reference signal obtained from the averaging of previous samples is used to determine the switch transition and to mitigate the interferences derived from clutter reflections. A gain compensation function is applied to equalize the attenuation due to propagation loss. An improved method based on the continuous wavelet transform with Morlet wavelet is used to overcome detection problems associated to a low signal-to-noise ratio at the receiver. The average delay profile is used to detect the tag delay. Experimental measurements up to 5 m are obtained. © 2015 IEEE.
Thematic Areas: Telecommunications Interdisciplinar Engineering, electrical & electronic Engenharias iv Electrical and electronic engineering Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: antonioramon.lazaro@urv.cat david.girbau@urv.cat ramon.villarino@urv.cat
Author identifier: 0000-0003-3160-5777 0000-0001-7995-5536 0000-0001-9692-8943
Record's date: 2024-10-26
Papper version: info:eu-repo/semantics/acceptedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Antennas And Wireless Propagation Letters. 15 618-621
APA: Lazaro A; Ramos A; Girbau D; Villarino R (2016). Signal Processing Techniques for Chipless UWB RFID Thermal Threshold Detector Detection. Ieee Antennas And Wireless Propagation Letters, 15(), 618-621. DOI: 10.1109/LAWP.2015.2464680
Entity: Universitat Rovira i Virgili
Journal publication year: 2016
Publication Type: Journal Publications
Repositori URV