3.8 Proceedings Paper

Dual-band Rectenna Using Voltage Doubler Rectifier and Four-Section Matching Network

Publisher

IEEE

Keywords

dual-band rectenna; energy harvesting; rectifying circuit; voltage doubler; wireless power transmission

Funding

  1. VLSI Design and Education Center (VDEC)
  2. University of Tokyo
  3. Keysight Corporation

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A dual-frequency rectenna is introduced in this paper. An enhanced-gain antenna is integrated with the rectifying circuit for increasing the rectenna capability for scavenging. A voltage doubler circuit is used for the rectification. Moreover, a four-section matching network is employed for the matching between the antenna and the rectifier. The measured results reveal that the RF-to-DC conversion efficiency is more than 50% over wide range of the input power, from 3.5dBm to 10.5dBm at fi and from 4.5dBm to 11dBm at f2, with maximum conversion efficiency of 63% and 69% at input power of 7dBm and 3.5dBm, respectively with resistive load of 11-a2. Furthermore, the measurements illustrate good agreement between the simulated and measured results.

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