A 4.6-GHz Class-F−1 high power CMOS power amplifier

A 4.6-GHz Class-F
^-1
CMOS power amplifier implemented in 0.18-μm CMOS process for wireless applications with high output power and high efficiency is proposed. By using harmonics tuning technique and cascode devices, the proposed power amplifier achieves an output power of 27.8-dBm with power-add-efficiency (PAE) of 32% and quiescent 158-mW dc power consumption.