Design Method for Differential Rectifier Circuit Capable of Rapidly Charging Storage Capacitor

Daiki FUJII  Masaya TAMURA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E104-C   No.7   pp.355-362
Publication Date: 2021/07/01
Publicized: 2020/12/04
Online ISSN: 1745-1353
DOI: 10.1587/transele.2020ECP5026
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
rectifiers,  impedance matching,  wireless sensor networks,  wireless power transmission,  power supplies,  

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Summary: 
This study proposes a design method for a rectifier circuit that can be rapidly charged by focusing on the design-load value of the circuit and the load fluctuation of a storage capacitor. The design-load value is suitable for rapidly charging the capacitor. It can be obtained at the lowest reflection condition and estimated according to the circuit design. This is a conventional method for designing the rectifier circuit using the optimum load. First, we designed rectifier circuits for the following three cases. The first circuit design uses a load set to 10 kΩ. The second design uses a load of 30 kΩ that is larger than the optimum load. The third design utilizes a load of 3 kΩ. Then, we measure the charging time to design the capacitor on each circuit. Consequently, the results show that the charge time could be shortened by employing the design-load value lower than that used in the conventional design. Finally, we discuss herein whether this design method can be applied regardless of the rectifier circuit topology.