Research Article
Mutual Coupling Effect on Classical Three-way Doherty Amplifier for 5G Applications
@INPROCEEDINGS{10.4108/eai.28-6-2020.2298144, author={Ahmed Abdulkhaleq and Khalid Hameed and Maan Yahya and Yasir Al-Yasir and Naser Ojaroudi Parchin and Syed Syed Anera and Ashwain Rayit and Raed Abd-Alhameed}, title={Mutual Coupling Effect on Classical Three-way Doherty Amplifier for 5G Applications}, 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; efficiency; antenna; beamforming; vswr; output power}, doi={10.4108/eai.28-6-2020.2298144} }- Ahmed Abdulkhaleq
Khalid Hameed
Maan Yahya
Yasir Al-Yasir
Naser Ojaroudi Parchin
Syed Syed Anera
Ashwain Rayit
Raed Abd-Alhameed
Year: 2020
Mutual Coupling Effect on Classical Three-way Doherty Amplifier for 5G Applications
IMDC-SDSP
EAI
DOI: 10.4108/eai.28-6-2020.2298144
Abstract
A three-way Doherty power amplifier targeting sub 6-GHz for 5G applications is designed using three 6W GaN HEMT transistors to achieve an 18W peak power with an 8.5 dB back-off efficiency. The amplifier achieved an efficiency of 55%, 63% and 80% at 8.5, 6, and 0 dB respectively from the peak power. The designed amplifier target 3.4-3.8 GHz band with a 13 dB of gain over the design band. In addition, the amplifier was tested for different VSWRs considering the antenna impedance changing due to beamforming. There was an average of 3.35 dBm variation in the output power and 20% efficiency variation for different VSWRs at both the peaking and back-off regions. The structure of three-way Doherty amplifier or sequence of turning the peaking amplifiers on affects the amplifier performance for different VSWRs.
