Title :
The closed-loop design of inverse Class-E power amplifier for wireless energy transmission system
Author :
Hongfeng Shen ; Wenxiao Gu ; Yongliang Zhang ; Menglian Zhao ; Hongjia Wu ; Xiaobo Wu
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
This paper presents an optimal design methodology and a closed-loop control strategy for inverse Class-E power amplifier. An inverse Class-E power amplifier being utilized as the wireless energy transmitter makes the system more miniature and efficient. The load impedance is considered as a variable, and the inverse Class-E amplifier keeps operating in the optimal state when the load network changes by adjusting the duty cycle and frequency of the switching voltage. Corresponding closed-loop control circuits are designed with the process of SMIC 0.18μm 3.3V. Simulation results verify the closed-loop design and show that with a 20 % tolerance range of the output load network, the inverse Class-E amplifier can keep working in the optimal state.
Keywords :
closed loop systems; control system synthesis; power transmission control; radiofrequency power amplifiers; radiofrequency power transmission; SMIC; closed loop control circuit design strategy; duty cycle adjustment; inverse Class-E power amplifier; load impedance; load network; optimal design methodology; wireless energy transmission system; wireless energy transmitter; Couplings; Detectors; Mathematical model; Power amplifiers; Switches; Voltage-controlled oscillators; Wireless communication; Optimal design; close-loop control; inverse Class-E;
Conference_Titel :
Power Electronics and Drive Systems (PEDS), 2015 IEEE 11th International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/PEDS.2015.7203500
