A 28GHz, Asymmetrical, Modified Doherty Power Amplifier, in 22nm FDSOI CMOS: presented in 2020 IEEE International Symposium on Circuits and Systems (ISCAS) by Nourhan Elsayed

November 9, 2020

A 28GHz, Modified Doherty Power Amplifier (MDPA) was implemented in 22nm FDSOI CMOS technology from GF. The MDPA adopts an asymmetrical topology utilizing two cascode CMOS amplifiers as the main (Class-A) and auxiliary (Class-C). This allows a supply voltage of 2.5V and consequently higher output power. The use of a main Class-A amplifier is conducive to a higher linearity (IIP3). The integrated design implements the main and auxiliary amplifier, along with the matching and transmission line networks on chip. The fabricated amplifier occupies an area of 1.2mm 2 , exhibits 12 dBm saturated output power, a peak power gain of 10dB, 16% peak power-added efficiency (PAE) and 12.5% at 6-dB back-off. The measured IIP3 is 20dBm.

 View full paper and presentation here: https://ieeexplore-ieee-org.libconnect.ku.ac.ae/document/9180851