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Improved efficiency in the CMOS cross-connected bridge rectifier for RFID applications
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2011 (English)In: Proceedings of the 18th International Conference Mixed Design of Integrated Circuits and Systems: MIXDES 2011; Gliwice; 16 June 2011 through 18 June 2011, Piscataway, NJ: IEEE Communications Society, 2011, 334-339 p.Conference paper (Refereed)
Abstract [en]

A bridge rectifier based on the cross-connected NMOS-PMOS bridge that avoids the inherent degradation of power conversion efficiency for increasing input levels is presented. Instead of PMOS switches, the proposed rectifier uses diode-connected MOS transistors with static threshold cancellation and minimised diode reverse leakage. With a simple and power efficient circuit solution the new rectifier allows for low-power, passive tag implementation in standard CMOS for both LF and HF RFID applications. Simulation results of the proposed rectifier in a 0.35 µm CMOS process show a power conversion efficiency over 60 % for all input levels above 0.75 V with a 100 kΩ load and an input signal frequency of 13.56 MHz. The simulated DC output voltage at the same conditions is approximately Vin - 0.3 V. A model for the PCE of the new rectifier that includes the impact of the Vth-generator is developed and compared with simulated results.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2011. 334-339 p.
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-40640Local ID: fd53b63d-f5ec-4acb-a429-35d6a9b3c690ISBN: 978-83-932075-0-3ISBN: 978-83-932075-1-0 (PDF)OAI: oai:DiVA.org:ltu-40640DiVA: diva2:1014161
Conference
International Conference Mixdes Design of Integrated Circuits and Systems : 16/06/2011 - 18/06/2011
Projects
ESIS
Note
Godkänd; 2011; Bibliografisk uppgift: Article number 6015936; 20110916 (ysko)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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