Selecting Impedance States in a Passive Computational RFID Tag Backscattering in PSK

A methodology to carefully select the impedance states of a backscatter phase-shift keying (PSK) load modulator in a passive computational ultrahigh-frequency (UHF) radio frequency identification (RFID) tag is presented. Considering the most significant tag read range limitations reader sensitivity,...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2019-10, Vol.29 (10), p.680-682
Hauptverfasser:	Muralter, Florian, Landaluce, Hugo, Del-Rio-Ruiz, Ruben, Perallos, Asier
Format:	Artikel
Sprache:	eng
Schlagworte:	Automatic identification Backscatter Backscattering Bit error rate Computational radio frequency identification (CRFID) Energy harvesting Energy transmission Impedance passive modulated backscatter Phase shift keying power reflection Radio frequency identification Radiofrequency identification Sensitivity Smith chart tags Ultrahigh frequencies Uplink
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Beschreibung
Zusammenfassung:	A methodology to carefully select the impedance states of a backscatter phase-shift keying (PSK) load modulator in a passive computational ultrahigh-frequency (UHF) radio frequency identification (RFID) tag is presented. Considering the most significant tag read range limitations reader sensitivity, power transmission and bit error rate (BER), the proposed selection results in constant power transmission to the energy harvester and thus in an increase of the average power at the input of the energy harvester during tag-to-reader communication. A graphical tool to select the modulator impedance states using a Smith chart is proposed.
ISSN:	1531-1309 2771-957X 1558-1764 2771-9588
DOI:	10.1109/LMWC.2019.2935303