Paper Info
Title
Structure-Reconfigurable Power Amplifier (SR-PA) and 0X/1X Regulating Rectifier for Adaptive Power Control in Wireless Power Transfer System
Abstract
This article presents a 6.78-MHz wireless power transfer system with a structure-reconfigurable power amplifier (SR-PA) and a 0X/1X regulating rectifier. The proposed 0X/1X regulating rectifier with local-loop control achieves voltage rectification and regulation without dc-dc converter usage to improve the receiver efficiency. To further enhance the system efficiency, the proposed SR-PA with global-loop power control adjusts its power-stage structure to realize adaptive power delivery. The transmitter and receiver chips were fabricated in a 0.25- μm CMOS process using 5-V devices, and the resulting system was able to regulate an output voltage of 5 V. The measurement results demonstrated an 11.2% improvement in system efficiency for a light load and a 2.7 times increase in available output power compared with the same system without transmission power control. A measured peak receiver efficiency of 92.9% and a total system efficiency of 71.5% were also demonstrated.
Year
DOI
Venue
2021
10.1109/JSSC.2020.3035429
IEEE Journal of Solid-State Circuits
Keywords
DocType
Volume
Adaptive power control,regulating rectifier,resonant coupling,structure-reconfigurable power amplifier (SR-PA),wireless power transfer (WPT)
Journal
56
Issue
ISSN
Citations 
7
0018-9200
2
PageRank 
References 
Authors
0.40
0
5
Name
Order
Citations
PageRank
Fu-Bin Yang120.74
Jonathan Fuh220.74
Yu-Hsien Li320.40
Makoto Takamiya439579.98
Po-Hung Chen520.40