Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 30, Issue 1, Pages 43-46Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2019.2954594
Keywords
Broadband rectifier; microstrip; RF energy harvesting; wireless power transfer (WPT)
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Funding
- National Research Foundation of Korea (NRF) through the Korea Government, Ministry of Science & Information and Communications Technology (ICT) [NRF-2017R1C1B5018179]
- National Research Foundation of Korea [2017R1C1B5018179] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A novel broadband RF-to-DC rectifier using an uncomplicated matching approach is proposed and tested. The proposed rectifier is based on a voltage doubler-type configuration and broadband matching is achieved by simply adding two inductors in series with each of the diodes, canceling out the large capacitance inherent in the diodes as well as producing resonances over a wide bandwidth. This uncomplicated matching network allows for a smaller circuit footprint while providing a wide bandwidth. The proposed rectifier is validated via simulation and measurement. The results demonstrate that a rectification efficiency of more than 50 is maintained over a bandwidth of approximately 83 (0.54-1.3 GHz) at 5-dBm input power, with the maximum rectification efficiency of 80 at 10-dBm input power.
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