Two High Power and Broadband Power Amplifiers using Transformer-based Resonating Peak Control Technique for E-Band Communication and Automotive Radars in 55-nm CMOS

This paper presents two E-band millimeter-wave (mm-wave) transformer-based power amplifiers (PAs) implemented in 55-nm CMOS process, including a 1-way differential PA (PA1) and a 2-way differential PA (PA2). A transformer-based resonating peak control technique is proposed to realize broadband characteristic. The 1-way differential PA1 achieves a 3 dB bandwidth (BW
_-3dB
) of 16 GHz, a P
_sat
of 17 dBm and a peak PAE of 18.4%. The 2-way PA2 achieves a BW
_-3dB
of 14 GHz, a P
_sat
of 20 dBm and a PAE
_MAX
of 14.3%.