A High Power SOI-CMOS WI-FI 6 Front-End Module with Reconfigurable Class-J Power Amplifier

This paper presents the design and experimental characterization of a high-power monolithic SOI-CMOS Front End-Module (FEM) supporting Wi-Fi 6 signals over the 5.1 to 5.9 GHz frequency band. The FEM includes an SP3T antenna switch, a power amplifier (PA), a low noise amplifier (LNA) with bypass mode, and a digital controller. The LNA achieves 14dB of power gain with less than 2.1 dB of noise figure (NF) with 25 mW of power consumption. The reconfigurable differential Class-J PA delivers 32dBm of saturated output power ($P_{\text {sat }}$) with 34% of peak PAE. Without DPD, the reconfigurable PA achieves state-of-the art performance with $\mathbf{2 0 / 1 8 d B m}$ of linear output power ($\mathbf{P}_{\text {out }}$) for an EVM of $-34 /-37.5 \mathrm{~dB}$ with 80 MHz MCS9/MCS11 signals.