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An improved detector topology for a rectenna

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2 Author(s)
Mbombolo, S.E.F. ; Univ. du Quebec a Rimouski, Rimouski, QC, Canada ; Chan Wang Park

This paper introduces an improved detector topology which is used to design the rectifier that is a part of a rectenna, operating in the S-band. Our proposition adds a third diode into the conventional half bridge detector, leading to improve the output DC voltage and to reduce the harmonics power level. Then, a rectifying circuit is built using two approaches. The first rectifier is based on a HSMS2822 doubler with a HSMS2820 diode. While the second rectifier uses a HSMS282P quad. We have achieved a RF-DC conversion efficiency of 57% at 2.45 GHz and of 72% at 2.1 GHz, respectively for the first and the second rectifier.

Published in:

Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2011 IEEE MTT-S International

Date of Conference:

12-13 May 2011