Journal
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS
Volume 33, Issue 9, Pages 1361-1364Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWT.2023.3285692
Keywords
Microwave rectifier; tri-band; wireless power transfer (WPT)
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This letter introduces an efficient tri-band rectifier using a multistub matching network. Theoretical analysis shows good input impedance matching can be achieved with the tri-band impedance matching network consisting of the multistub. A fabricated tri-band rectifier operating at 0.915, 2.45, and 5.8 GHz demonstrates maximum efficiencies of 76.7%, 74.4%, and 68.7% respectively with a 1000 Omega load. This proposed rectifier has the potential application as an energy converter for battery-less electrical devices.
This letter presents an efficient tri-band rectifier using a multistub matching network. Theoretical analysis of the tri-band impedance matching network consisting of the multistub is carried out, which shows that good input impedance matching can be achieved. For demonstration, a tri-band rectifier working at 0.915, 2.45, and 5.8 GHz is fabricated with dimensions of 44 x 35 mm. The measured results show that with a 1000 Omega load, the maximum efficiencies of the rectifier reach 76.7%, 74.4%, and 68.7% at 0.915, 2.45, and 5.8 GHz, respectively. This proposed efficient and compact rectifier has the potential application as an energy converter for battery-less electrical devices.
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