CST – Computer Simulation Technology

Rigorous Investigation of Interactions between Passive RFID Tags by Means of Nonlinear/Electromagnetic Co-simulation

Title:
Rigorous Investigation of Interactions between Passive RFID Tags by Means of Nonlinear/Electromagnetic Co-simulation
Author(s):
Vittorio Rizzoli, Alessandra Costanzo, Matteo Rubini, Diego Masotti
Source:
Proceedings of the 36th European Microwave Conference
Vol./Issue/Date:
Sept. 2006
Year:
2006
Page(s):
722-725
Keywords:
nonlinear circuits, passive RFID, harmonic analysis, interference
Abstract:
The paper proposes a rigorous approach to the prediction of electromagnetic interaction between tags of an RFID system powered by the incident field radiated by the reader. The design of a 2.45 GHz band passive transponder and its integrated antenna is first developed making use of a numerical optimization based on EM analysis coupled with the harmonic-balance technique. A couple of tags, located at varying mutual positions, is then analysed under digitally modulated RF drive. The results show a significant modification of the electrical and radiation performance of each tag and suggest the need for a multi-tag design procedure to account for these coupling effects.
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