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Ultra-Low-Power Series Voltage Regulator for Passive Microwave RFID transponders. Giuseppe De Vita, Giuseppe Iannaccone Dipartimento di Ingegneria dell ’ Informazione: Elettronica, Informatica,Telecomunicazioni Universit à degli Studi di Pisa, Via Caruso 16, I-56122 Pisa, Italy

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Ultra-Low-Power Series Voltage Regulator for Passive Microwave RFID transponders

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Ultra-Low-Power Series Voltage Regulator for

Passive Microwave RFID transponders

Giuseppe De Vita, Giuseppe Iannaccone

Dipartimento di Ingegneria dell’Informazione: Elettronica, Informatica,Telecomunicazioni

Università degli Studi di Pisa, Via Caruso 16, I-56122 Pisa, Italy

NORCHIP Conference,2005.23rd

指導教授:林志明 教授

級別:碩一

學生:張家瑋


Outline

‧Abstract

‧Introduction

‧Reference Voltage Generator

‧Series Voltage Regulator

‧Experimental Results

‧Conclusion

‧References


Abstract

‧operating in the 868/916 MHz

‧implemented in a 0.35μm BiCMOS technology

‧provide a regulated voltage of 0.6 V


Introduction


Reference Voltage Generator


.cascode current mirror is used


  • .a simple current mirror

Where VA is the Early voltage


As the supply voltage has large variations, we have an unacceptable PSRR of the series voltage regulator.


.use a cascode current mirror

where λ is the channel length modulation coefficient


.By setting k1/k2=0.5 and R= 2 MΩ,

we can get a very good PSRR

for the voltage regulator.


Series Voltage Regulator


Experimental Results


Conclusion

.Experiment confirms that it provides a very low

quiescent power consumption, and a very good PSRR.

. quiescent current of only 34nA

.Provide a regulated voltage of 0.6 V


References

[1] T. Basten, L. Benini, A. Chandrakasan, M. Lindwer, J. Liu, R. Min, F.

Zhao, “Scaling into Ambient Intelligence,”Proc. DATE 2003, Munich,

Germany, March 2003, pp 76-81.

[2] CEPT REC 70-03 Annex 1, ETSI EN 330 220-1.

[3] G. De Vita and G. Iannaccone, “Design Criteria for the RF section of

Long Range Passive RFID Systems,”Proc. NORCHIP 2004, Oslo,

Norway, November 2004, pp 107-110.

[4] V. Balan, “A Low-Voltage Regulator Circuit with Self-Bias to Improve

Accuracy,”IEEE Journal of Solid State Circuits, Vol. 38, No 2, pp. 365-

368, February 2003.

[5] G. A. Rincon-Mora and P. E. Allen, “A Low-Voltage, Low-Quiescent

Current, Low Drop-out Regulators,”IEEE Journal of Solid State Circuits,

Vol. 33, No 1, pp. 36-44, January 1998.

[6] K. N. Leung and P. K. T. Mok, “A CMOS Voltage Reference Based on

Weighted ΔVGS for CMOS Low-Dropout Linear Regulators,”IEEE

Journal of Solid State Circuits, Vol. 38, pp. 146-150, January 2003.


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