High Linearity and High Efficiency Stacked-FET Millimeter-Wave Power Amplifier ICs

Recently reported CMOS power amplifier ICs for microwave and millimeter-wave communication systems such as 5G are summarized and reviewed in this paper. Stacked-FETs are widely utilized to increase the output power and to conquer low breakdown voltage issues. In addition, adaptive bias and load circuits are fully described to improve the linearity and back-off efficiency of the power amplifier ICs in this paper.