Mutual Coupling Effect on Classical Three-way Doherty Amplifier for 5G Applications

Abdulkhaleq, Ahmed and Hameed, Khalid and Yahya, Maan and Al-Yasir, Yasir and Ojaroudi Parchin, Naser and Syed Anera, Syed and Rayit, Ashwain and Abd-Alhameed, Raed (2020) Mutual Coupling Effect on Classical Three-way Doherty Amplifier for 5G Applications. In: IMDC-SDSP 2020, 28-30 June 2020, Cyberspace.

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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.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: three-way doherty amplifier; efficiency; antenna; beamforming; vswr; output power
Subjects: Q Science > QA Mathematics > QA76 Computer software
Depositing User: EAI Editor III.
Date Deposited: 26 Feb 2021 16:13
Last Modified: 26 Feb 2021 16:13

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