Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 32, Issue 10, Pages 1215-1218Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2022.3174203
Keywords
Microwave measurement; Microwave circuits; Voltage measurement; Impedance; Inductors; Resistance; Microwave integrated circuits; Impedance matching; microwave wireless power transmission (MWPT); wide load; Zeta converter
Categories
Funding
- Chengdu-Chongqing Double City Economic Circle Construction Technology Innovation Project [KJCXZD2020001]
- Chongqing Technology Innovation and Application Development Project [cstc2019jscx-dxwtBX0001]
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A novel impedance matcher based on Zeta converter is designed to address the limitations of other impedance matching methods and improve load range in low resistances. The system-level verification demonstrates that this novel impedance matcher has potential application value in microwave wireless power transmission (MWPT) system.
In this letter, a novel impedance matcher (IM) is designed based on Zeta converter to overcome the shortcomings of other impedance matching methods and improve the load range in low resistances. System-level verification demonstrates that the novel IM has a potential application value for microwave wireless power transmission (MWPT) system. Measurement results show the maximum power conversion efficiency (PCE) of the novel rectifier with IM can reach 73% when the input power is 32 dBm. In addition, the proposed rectifier circuit with IM can operate with above 60% overall efficiency when the load varies from 0.01 to 10 k omega (1:1000) as input power of 32 dBm. Compared with that without IM, the application of IM can increase the load range by at least 1100% when the rectifier efficiency is >50.7%. The measurement results demonstrate that the rectifier circuit has a better performance when connected to the novel IM.
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