Design Criteria for the RF Section of UHF andMicrowave Passive RFID TranspondersGiuseppe De Vita and Giuseppe Iannaccone, Member, IEEE

指導教授：林志明 老師研究生：許晉榕學號： S95662003

Outline

Introduction Voltage multiplier and power

matching network N-Stage Voltage Multiplier Power-Matching Network Probability of Error at the Reader CONCLUSION

Introduction

important to achieve a nontrivial tradeoff between the desired error proba-bility at the reader and the dc power available for supplying the transponder, which is also strongly dependent on the power efficiency of RF–dc conversion.

Voltage multiplier and power matching network

N-Stage Voltage Multiplier

Power-Matching Network

Probability of Error at the Reader

Conclusion

RFID transponders, which require a dc power of 1 W for the digital section, may reach an operating range of about 4 m in the ISM 2.45-GHz band and 11 m in the ISM 868-MHz