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Design of a highly efficient CMOS rectifier for passive communication systems

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6 Author(s)
Essel, J. ; Inst. for Electron. Eng., Univ. of Erlangen-Nuremberg, Erlangen, Germany ; Brenk, D. ; Heidrich, J. ; Hofer, G.
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This paper presents the design of a highly efficient CMOS rectifier for passive communication systems. The integrated rectifier is implemented in a 0.13 μm CMOS technology. The measured overall RF-to-DC power conversion efficiency for a DC output power of 10 μW (1V and 10 μA) is about 25%. The maximum efficiency for a DC output voltage of 1V is about 43% at UHF and the efficiency of the rectifier at -15 dBm RF input power is still 20%. This rectifier is using a self threshold cancelation technique to enhance the efficiency significantly.

Published in:

Microwave Conference Proceedings (APMC), 2010 Asia-Pacific

Date of Conference:

7-10 Dec. 2010