mm-Wave CMOS Power Amplifiers for 5G Base Station Applications

We will present the recently developed mm-wave CMOS power amplifiers (PAs) for large-scale (>500) RF phased-arrays in particular for the 5G base station applications. We will introduce the motivations of 5G wireless communications, the system configurations of RF phased-array transceiver ICs, and the target RF specifications especially for mm-wave CMOS PAs. This presentation will cover the simple class-AB PAs with neutralization techniques (gain), second harmonic termination schemes (linearity), stacked PA architectures (power), and Doherty PAs (efficiency). Additionally, we will explain the mm-wave PA design considerations for multi-channel RFICs.