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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2022-08-01
Efficient Broadband Power Amplifier Using Klopfenstein Taper as Output Matching Network
By
Duo-Wei Liu,

    Dr. Duo-Wei Liu

    College of Electronics and Information Engineering

    Sichuan University

    China

    Homepage

Fei Cheng,

    Dr. Fei Cheng

    College of Electronics and Information Engineering

    Sichuan University

    China

    Homepage

Chao Gu,

    Dr. Chao Gu

    ECIT Institute

    Queens University Belfast

    UK

    Homepage

Kama Huang

    Professor Kama Huang

    Sichuan University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 105, 103-109, 2022
doi:10.2528/PIERL22030201 | Google Scholar

Abstract
An efficient 0.6-4.2 GHz GaN-HEMT power amplifier based on Klopfenstein taper is proposed in this letter. A method based on source-pull/load-pull simulation has been used to find the optimum source and load impedances across the broad band. Then the Klopfenstein taper is studied and adopted for the output matching circuit design to achieve broadband performance. The measured results show that our proposed power amplifier has a fractional bandwidth of 150%, with saturated output power ranging from 39.45 to 42.32 dBm, power added efficiency from 45.1% to 64.8%, and over 9 dB gain at the whole working band of 0.6-4.2 GHz. The fabricated power amplifier can cover most of the wireless communication frequency bands.
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Citation
Duo-Wei Liu, Fei Cheng, Chao Gu, and Kama Huang, "Efficient Broadband Power Amplifier Using Klopfenstein Taper as Output Matching Network," Progress In Electromagnetics Research Letters, Vol. 105, 103-109, 2022.
doi:10.2528/PIERL22030201
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