A Simple and Accurate Model for RFID Rectifier

In this paper, a simple model for the UHF low power rectifier circuit is proposed. Using a novel approach to model the rectifier current waveform, simple analytical equations are derived. The output DC voltage and the efficiency of the rectifier are derived analytically. Simulation results of the rectifier using actual models are very close to those predicted by the proposed model. The derived formulas for the output DC voltage and the efficiency are simple and physically meaningful and can be used to optimize the performance of the rectifier.

[1]  François Krummenacher,et al.  A model for /spl mu/-power rectifier analysis and design , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[2]  Martin Fischer,et al.  Fully integrated passive UHF RFID transponder IC with 16.7-μW minimum RF input power , 2003, IEEE J. Solid State Circuits.

[3]  K. Sharaf,et al.  Ultra low power UHF RFID tag in 0.13 μm CMOS , 2007, 2007 Internatonal Conference on Microelectronics.

[4]  Chi-Ying Tsui,et al.  Analysis and Design Strategy of UHF Micro-Power CMOS Rectifiers for Micro-Sensor and RFID Applications , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[5]  H. Yoshida,et al.  A 950-MHz rectifier circuit for sensor network tags with 10-m distance , 2006, IEEE Journal of Solid-State Circuits.

[6]  M.P. Flynn,et al.  A new transponder architecture with on-chip ADC for long-range telemetry applications , 2006, IEEE Journal of Solid-State Circuits.

[7]  S. Walton,et al.  To Appear in: , 2001 .

[8]  C. Dehollain,et al.  Remotely powered addressable UHF RFID integrated system , 2005, IEEE Journal of Solid-State Circuits.

[9]  Jan M. Rabaey,et al.  Digital Integrated Circuits: A Design Perspective , 1995 .