Research Article
Three-Way Doherty Power Amplifier Using Class-F Amplifier for More Efficient Mobile Communications
@INPROCEEDINGS{10.4108/eai.28-6-2020.2297908, author={Ahmed Abdulkhaleq and Maan Yahya and Maryam Sajedin and Yasir Al-Yasir and Naser Ojaroudi Parchin and Ashwain Rayit and Issa Elfergani and Raed Abd-Alhameed and Jonothan Rodriguez}, title={Three-Way Doherty Power Amplifier Using Class-F Amplifier for More Efficient Mobile Communications}, proceedings={Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020}, publisher={EAI}, proceedings_a={IMDC-SDSP}, year={2020}, month={9}, keywords={three way doherty amplifier class f efficiency back-off output power}, doi={10.4108/eai.28-6-2020.2297908} }- Ahmed Abdulkhaleq
Maan Yahya
Maryam Sajedin
Yasir Al-Yasir
Naser Ojaroudi Parchin
Ashwain Rayit
Issa Elfergani
Raed Abd-Alhameed
Jonothan Rodriguez
Year: 2020
Three-Way Doherty Power Amplifier Using Class-F Amplifier for More Efficient Mobile Communications
IMDC-SDSP
EAI
DOI: 10.4108/eai.28-6-2020.2297908
Abstract
An efficient three-way Doherty amplifier is designed and simulated using Microwave Office software, where the amplifier is targeting 3.4-3.8 GHz for 5G applications using three GaN HEMT transistors (6W, 25W and 45W) to achieve a 76W peak power. Each amplifier was designed to work as a class F amplifier to improve the efficiency of the designed amplifier. In addition, A new impedance modulation configuration is used, where a gain of 12.5 dB was achieved over the design band, in addition, a 13 dB back-off efficiency was achieved with 50-60% drain efficiency. Changing the location of the peaking amplifier or changing the operation sequence of the peaking amplifier can achieve good efficiency at the back-off region. There was an efficiency improvement of 10% at the back off by utilizing a class F amplifier comparing with the classical Doherty design.
