Talks and Poster Presentations (with Proceedings-Entry):
L.W. Mayer, A.L. Scholtz:
"Sensitivity and Impedance Measurements on UHF RFID Transponder Chips";
Talk: The Second International EURASIP Workshop on RFID Technology,
- 07-08-2008; in: "The second international EURASIP Workshop on RFID Technology RFID2008",
We present a method to perform accurate measurements in the UHF (ultra high frequency) band on passive RFID (radio frequency identification) transponder chips. Our samples were extracted from commercially available RFID tag inlays. We determine the minimum operating power necessary to get a response from the transponder chip. Furthermore, we measure the chip input impedance in both, the reflecting and the absorbing state as a function of input power. We present measurement results of four transponder chips and find good agreement with values claimed in the manufacturer´s data sheets. At the end of the paper we draw conclusions for the optimum antenna design and the link budget.
RFID; transponder; chip; measurement; UHF; impedance; backscattering; return link; shunt; delta gamma; power; pre-matched; prematched
Electronic version of the publication:
Created from the Publication Database of the Vienna University of Technology.