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Passive CMOS UHF RFID Transponders: A Nonlinear Black-Box Model of the RF Frontend

This paper presents a dynamic nonlinear behavioral model of the RF frontend of a passive RFID transponder for use in single-reader system simulations. By using this model the simulation time for antenna optimizations can be reduced considerably. In addition to the reduction of the simulation effort, the model hides the physical implementation and intellectual properties. A mixed time-domain/frequency-domain formulation is introduced for faster model parameter identification. Feedforward multi-layer-perceptron artificial-neural-networks have been used for the nonlinear multivariate system mapping.