The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2022
Filed:
Oct. 29, 2021
National Yang Ming Chiao Tung University, Hsinchu, TW;
Wei-Hua Chieng, Hsinchu, TW;
Edward Yi Chang, Hsinchu County, TW;
Stone Cheng, Hsinchu, TW;
Shyr-Long Jeng, Tainan, TW;
Li-Chuan Tang, Taoyuan, TW;
Chih-Chiang Wu, Hsinchu County, TW;
Yueh-Tsung Hsieh, Hsinchu, TW;
Ching-Yao Liu, Hsinchu, TW;
Kuo-Bin Wang, Hsinchu, TW;
NATIONAL YANG MING CHIAO TUNG UNIVERSITY, Hsinchu, TW;
Abstract
A voltage-controlled varied frequency pulse width modulator is provided, including a frequency-regulating voltage output device which receives a determining voltage, decides a resonant frequency according to the determining voltage and outputs an oscillation signal having the resonant frequency. A duty-ratio-regulating voltage output device receives the oscillation signal and a reference signal to determine a duty ratio through an inverting closed loop, so as to adjust the oscillation signal to have the duty ratio. By employing the proposed voltage-controlled modulator circuit with tunable frequency and varied pulse width of the present invention, a modulation signal having the determined resonant frequency and duty ratio is obtained. Moreover, the present invention can be further combined with gate drive waveform trend feedback designs to achieve superior power transmission efficiency of a wireless power transmission system to optimize the inventive effect of the present invention.