Development of high efficiency rectification circuit for mW-class rectenna

Kazuhiro Fujimori, Kazuya Tada, Yusuke Ueda, Minoru Sanagi, Shigeji Nogi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)


For applications of the microwave power transmission technology, it is necessary to realize high efficiency rectennas or rectification circuits. Especially, RF-ID's or ubiquitous power sources demand high RF-DC conversion efficiency for below mW microwave inputs. However, almost all past rectennas or rectification circuits were designed for over 100mW rectifying and the RF-DC conversion efficiencies were less than 20% at 1mW microwave input. In this paper, we investigate rectification circuits for developing mW-class rectennas. Discussing diode mount structures in order to increase the efficiency below 10mW microwave input, we succeeded in developing a rectification circuit whose efficiency is 62.8% for a 10mW microwave input. We also find that approximately 30% of the input microwave power is consumed by the diode in the rectification circuit.

Original languageEnglish
Title of host publication35th European Microwave Conference 2005 - Conference Proceedings
Number of pages4
Publication statusPublished - Dec 1 2005
Event2005 European Microwave Conference - Paris, France
Duration: Oct 4 2005Oct 6 2005

Publication series

Name35th European Microwave Conference 2005 - Conference Proceedings


Other2005 European Microwave Conference

ASJC Scopus subject areas

  • Engineering(all)


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