ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,144, issued on Feb. 10, was assigned to RadRock (Chongqing) Tech Co. Ltd. (Chongqing, China).
"Interstage matching circuit and push-pull power amplifier circuit" was invented by Yuan Cao (Guangdong, China), Xinghua Rong (Guangdong, China), Xiaolei Lai (Guangdong, China), Chuanqiu Lei (Guangdong, China) and Jianxing Ni (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are an interstage matching circuit and a push-pull power amplifier circuit. The push-pull power amplifier circuit comprises a pre-stage push-pull amplifier circuit and a post-stage push-pull amplifier circuit. The interstage matching circuit comprises a first mat...