ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,904, issued on Sept. 15, was assigned to National Cheng Kung University (Tainan, Taiwan).

"Low-EMI capacitively-coupled Class-D amplifiers with voltage boosting" was invented by Jhuang-Wei Cyue (Tainan, Taiwan) and Tai-Haur Kuo (Tainan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is a Class-D amplifier including: a capacitively-coupled amplifier, configured to receive an input signal and a feedback signal and generate an error signal; and a loop filter, coupled to input capacitor and the feedback capacitor, configured to generate a processed signal according to the error signal; and a pulse-width modulation (PWM) gen...