Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020

Research Article

Design of a Wideband Harmonically Tuned Class-J Power Amplifier

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  • @INPROCEEDINGS{10.4108/eai.28-6-2020.2298136,
        author={Maryam  Sajedin and Issa  Elfergani and Jonathan  Rodriguez and Manuel  Violas and Raed  Abd-Alhameed and Monica  Fernandez Barciela and Ahmed  Abdulkhaleq},
        title={Design of a Wideband Harmonically Tuned Class-J Power Amplifier },
        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={power amplifier design class-j broadband high efficiency},
        doi={10.4108/eai.28-6-2020.2298136}
    }
    
  • Maryam Sajedin
    Issa Elfergani
    Jonathan Rodriguez
    Manuel Violas
    Raed Abd-Alhameed
    Monica Fernandez Barciela
    Ahmed Abdulkhaleq
    Year: 2020
    Design of a Wideband Harmonically Tuned Class-J Power Amplifier
    IMDC-SDSP
    EAI
    DOI: 10.4108/eai.28-6-2020.2298136
Maryam Sajedin1,*, Issa Elfergani1, Jonathan Rodriguez1, Manuel Violas1, Raed Abd-Alhameed2, Monica Fernandez Barciela3, Ahmed Abdulkhaleq4
  • 1: Instituto de Telecomunicações, Aveiro, Portugal
  • 2: Faculty of Engineering and Informatics, Bradford University, Bradford BD7 1DP, UK
  • 3: Department of Signal Theory and Communications, University of Vigo, 36310 Vigo, Spain
  • 4: SARAS Technology Limited, Leeds LS12 4NQ, UK
*Contact email: maryam.sajedin@av.it.pt

Abstract

This paper describes a modern design idea of wideband and high efficient GaN HEMT Class-J power amplifiers. The operation principle of the Class-J mode, based on the second harmonic tuning, is introduced which can maximize the achievable efficiency. Matching network synthesis criteria for wideband frequency response are addressed for 5G power amplifiers design. This wideband harmonically tuned technique is applicable to amplifiers based on adjusting the shape of the waveforms through a a finite number of harmonics, such as Class-F,F^(-1) and E. Simulation results indicate that Class-J can provide a high drain efficiency of 70% across a 1.5 to 3.2 GHz bandwidth while delivering 10W output power at the 1dB- compression point, using GaN technology.