Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 28, Issue 11, Pages 1008-1010Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2018.2869281
Keywords
Broadband RF rectifier; energy harvesting (EH); frequency selection; high efficiency; impedance matching; wireless power transfer (WPT)
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Funding
- NFSC [61271074]
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In this paper, a high-efficiency rectifier with one octave bandwidth is proposed by proposing a diode array with a frequency selective topology. With the frequency selective topology, the low-and high-band rectifiers are combined together without extra matching circuit at the input leading to a high-efficiency broadband design. For validation, a prototype rectifier was fabricated and characterized. The measured results show that the RF-dc power conversion efficiency (PCE) maintains above 70% from 1.75 to 3.55 GHz at an input power of 10 dBm. The measured PCE remains more than 50% within 1.4-3.7 GHz and the |S-11| is lower than - 10 dB from 1.7 to 3.6 GHz.
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