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    Ultra-Compact mm-Wave Monolithic IC Doherty Power Amplifier for Mobile Handsets

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    Publication date
    2021-09
    Author
    Sajedin, M.
    Elfergani, Issa T.
    Rodriguez, Jonathan
    Abd-Alhameed, Raed A.
    Fernandez-Barciela, M.
    Violas, M.
    Keyword
    MMIC
    5G
    Doherty Power Amplifier
    GaAs pHEMT
    Mobile handset
    Rights
    © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
    Peer-Reviewed
    Yes
    Open Access status
    Gold
    
    Metadata
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    Abstract
    This work develops a novel dynamic load modulation Power Amplifier (PA) circuity that can provide an optimum compromise between linearity and efficiency while covering multiple cellular frequency bands. Exploiting monolithic microwave integrated circuits (MMIC) technology, a fully integrated 1W Doherty PA architecture is proposed based on 0.1 µm AlGaAs/InGaAs Depletion- Mode (D-Mode) technology provided by the WIN Semiconductors foundry. The proposed wideband DPA incorporates the harmonic tuning Class-J mode of operation, which aims to engineer the voltage waveform via second harmonic capacitive load termination. Moreover, the applied post-matching technique not only reduces the impedance transformation ratio of the conventional DPA, but also restores its proper load modulation. The simulation results indicate that the monolithic drive load modulation PA at 4 V operation voltage delivers 44% PAE at the maximum output power of 30 dBm at the 1 dB compression point, and 34% power-added efficiency (PAE) at 6 dB power back-off (PBO). A power gain flatness of around 14 ± 0.5 dB was achieved over the frequency band of 23 GHz to 27 GHz. The compact MMIC load modulation technique developed for the 5G mobile handset occupies the die area of 3.2.
    URI
    http://hdl.handle.net/10454/18600
    Version
    Published version
    Citation
    Sajedin M, Elfergani I, Rodriguez J et al (2021) Ultra-Compact mm-Wave Monolithic IC Doherty Power Amplifier for Mobile Handsets. Electronics. 10(17): 2131.
    Link to publisher’s version
    https://doi.org/10.3390/electronics10172131
    Type
    Article
    Collections
    Engineering and Informatics Publications

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