Design Criteria for the RF Section of UHF and Microwave Passive RFID Transponders Giuseppe De Vita a

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

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Outline

• Introduction
• Voltage multiplier and power matching network
• N-Stage Voltage Multiplier
• Power-Matching Network
• Probability of Error at the Reader
• CONCLUSION

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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 RFdc conversion.

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