Abstract This work presents a switched-capacitor power amplifier (SCPA) using periodic voltagepacing network, capable of generating output voltage beyond conventional rail-to-rail limit, which enhances both the output power (Pout) and efficiency. Fabricated in a 40nm CMOS process, it shows a competitive 27.92dBm peak Pout and 46.2% peak drain efficiency covering a wide 1dB bandwidth from 4.5 to 7.2GHz. Furthermore, it supports 200MHz 64QAM and 80MHz 256QAM, confirming its suitability for 5G/6G and WiFi systems. Digital power amplifiers (DPAs) are highly valued for their high efficiency, high output power (Pout), and high integration, making them essential for sub-6G wireless applications [1-5]. Besides, with the advancement of 5G/6G communication and WiFi systems, operating frequencies continue to increase, e.g., 5 to 7GHz. Current-mode DPAs have demonstrated high efficiency and good performance at high frequencies (e.g., >5GHz). However, they
Bingzheng Yang1,2, Jie Zhou1, Junfa Mao1, Xun Luo1
Shenzhen University, Shenzhen, China, 2University of Electronic Science and Technology of China, Chengdu, China