Optimized envelope tracking operation of Doherty power amplifier for high efficiency over an extended dynamic range
FREE-DOWNLOAD J Choi, D Kang, D Kim… – Microwave Theory and …, 2009 – This paper presents an optimized envelope tracking (ET) operation of a Doherty amplifier. Compared to the general ET/envelope elimination and restoration transmitter, it has an ad- vantage of the extended dynamic range of 6 dB for the load modu- lation of […]
A 50 to 70 GHz power amplifier using 90 nm CMOS technology
FREE-DOWNLOAD JL Kuo, ZM Tsai, KY Lin… – Microwave and Wireless …, 2009 A 50 to 70 GHz wideband power amplifier (PA) is de- veloped in MS/RF 90 nm 1P9M CMOS process. This PA achieves a measured sat of 13.8 dBm, 1 dB of 10.3 dBm, power added ef- ficiency (PAE) of 12.6%, and linear power gain of […]
A digitally modulated polar CMOS power amplifier with a 20-MHz channel bandwidth
FREE-DOWNLOAD A Kavousian, DK Su, M Hekmat… – Solid-State Circuits, …, 2008 – Abstract—This paper presents a CMOS RF power amplifier that employs a digital polar architecture to improve the overall power efficiency when amplifying signals with high linearity require- ments. The power amplifier comprises 64 parallel RF amplifiers that are driven by a