Electronics Research Laboratory
Dept. of Microelectronics

dr. M. Pashaeifar

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Electronic Circuits and Architectures (ELCA), Department of Microelectronics

PhD thesis (Oct 2024): Millimeter-Wave Transceiver Frontends for Broadband, Energy-Efficient, and Linear Phased-Array Systems
Promotor: Morteza Alavi, Leo de Vreede

Expertise: RF IC, Digital Synthesis, Data Converters

Themes: mm-wave sensors, Microwave circuits, RF electronics

Biography

Masoud Pashaeifar is a Ph.D. candidate researcher at TU Delft since June 2018. He received the B.Sc. degree in electronics, from the Shahid Bahonar University of Kerman, Kerman, Iran, and the M.Sc. degree in Circuits and Systems from the University of Tehran, Tehran, Iran.

Before joining the ELCA group, he was a Ph.D. student of Circuits and Systems at the University of Tehran. Also, he was the head of the Hardware group at Bakhtar Processing Company, Tehran, Iran.

His main research activity involves designing linear and efficient mm-wave transmitters for 5G cellular applications.

 

Projects history

Energy Efficient Wideband Transmitter, NXP Partnership ‘Advanced 5G Solutions’

This project providing enhanced average efficiency in wideband wireless transmitters while withstanding the changing load conditions that can occur in handheld devices and MIMO/smart-antenna communication systems.

  1. A 4×Two-Way mm-Wave Doherty CMOS PA
    Kumaran, Anil Kumar; Wu, Yizhuo; Pashaeifar, Masoud; Nachouane, Hamza; Gao, Chang; Cornelis Nicolaas de Vreede, Leonardus; Alavi, Morteza S.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 73, Issue 10, pp. 7482-7499, 2025. DOI: 10.1109/TMTT.2025.3569155
    Keywords: ... Impedance;Power combiners;Power amplifiers;Power generation;Bandwidth;Peak to average power ratio;Inductors;5G mobile communication;Capacitors;CMOS technology;Adaptive biasing;artificial intelligence (AI);compact;digital predistortion (DPD);Doherty;lumped components;millimeter-wave (mm-wave);power amplifier (PA);power combiner;three-stage;voltage standing wave ratio (VSWR).

  2. A Millimeter-Wave Power Amplifier With an Integrated CMOS Isolator/Circulator/Receiver
    Pashaeifar, Masoud; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Journal of Solid-State Circuits,
    pp. 1-13, 2025. DOI: 10.1109/JSSC.2025.3570656
    Keywords: ... Full-duplex system;Phased arrays;Bandwidth;Isolators;Circulators;Antennas;Sensitivity;Power amplifiers;ISO;Power generation;Blocker-tolerant receiver (RX);circulator;CMOS;duplexer;fifth-generation (5G);frequency division duplex (FDD);full-duplex;gyrator;in-band full-duplex;isolator;millimeter-wave (mm-wave);mutual coupling;N-path filter;power amplifiers (PAs);voltage standing wave ratio (VSWR) resilience.

  3. A Single-Supply Balun-First Three-Way mm-Wave Doherty PA
    Kumaran, Anil Kumar; Pashaeifar, Masoud; Alexanderson, Mats; Vreede, Leonardus Cornelis Nicolaas de; Alavi, Morteza S.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 72, Issue 5, pp. 2757-2772, 2024. DOI: 10.1109/TMTT.2024.3365697
    Keywords: ... Inductors;Integrated circuit modeling;5G mobile communication;Capacitors;Bandwidth;Impedance;Peak to average power ratio;Compact;Doherty;lumped components;millimeter wave;Norton transformation;power amplifier (PA);three-stage.

  4. A Chain-Weaver Balanced Power Amplifier With an Embedded Impedance/Power Sensor
    Pashaeifar, Masoud; Kumar Kumaran, Anil; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Journal of Solid-State Circuits,
    Volume 59, Issue 12, pp. 3938-3951, 2024. DOI: 10.1109/JSSC.2024.3453213
    Keywords: ... Gain;Linearity;Impedance;Power demand;Power amplifiers;Loading;Bandwidth;5G;amplitude-to-amplitude (AM-AM);amplitude-to-phase (AM-PM);balanced power amplifier;chain weaver;impedance sensor;mutual coupling;power amplifier (PA);power sensor;quadrature hybrid coupler;rms detector (DET);transmission line (TL);voltage standing wave ratio (VSWR);wideband.

  5. 32.7 A 25.2dBm PSAT, 35-to-43GHz VSWR-Resilient Chain-Weaver Eight-Way Balanced PA with an Embedded Impedance/Power Sensor
    Pashaeifar, Masoud; Kumaran, Anil K.; De Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2024 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 532-534, 2024. DOI: 10.1109/ISSCC49657.2024.10454427
    Keywords: ... Time-frequency analysis;5G mobile communication;Transmitters;Linearity;Power amplifiers;Solid state circuits;Reliability.

  6. A 26GHz Balun-First Three-Way Doherty PA in 40nm CMOS with 20.7 dBm Psat and 20dB Power Gain
    Kumaran, Anil Kumar; Pashaeifar, Masoud; Nemati, Hossein Mashad; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 189-192, 2023. DOI: 10.1109/RFIC54547.2023.10186161
    Keywords: ... Power measurement;5G mobile communication;Radio transmitters;Power amplifiers;Radiofrequency integrated circuits;Frequency measurement;Scattering parameters;Doherty;3-stage Power amplifier;Compact;Millimeter wave;Lumped components;Norton transformation.

  7. A Millimeter-Wave CMOS Series-Doherty Power Amplifier With Post-Silicon Inter-Stage Passive Validation
    Pashaeifar, Masoud; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Journal of Solid-State Circuits,
    Volume 57, Issue 10, pp. 2999-3013, 2022. DOI: 10.1109/JSSC.2022.3175685
    Keywords: ... Modulation;Impedance;Power generation;Bandwidth;5G mobile communication;Resonant frequency;Power combiners;Doherty power amplifier (DPA);impedance inverter;power amplifier (PA);root mean square (rms) detector;series-DPA (SDPA);transformer;wideband.

  8. Load-Modulation-Based IMD3 Cancellation for Millimeter-Wave Class-B CMOS Power Amplifiers Achieving EVM < 1.2%
    Pashaeifar, Masoud; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Microwave and Wireless Components Letters,
    Volume 32, Issue 6, pp. 716-719, 2022. DOI: 10.1109/LMWC.2022.3166257
    Keywords: ... Modulation;OFDM;Power generation;Logic gates;Linearity;5G mobile communication;Wireless communication;5G New Radio (NR);Doherty;intermodulation distortion;load modulation;millimeter-wave;power amplifiers (PAs).

  9. A Millimeter-Wave Front-End for FD/FDD Transceivers Featuring an Embedded PA and an N-Path Filter Based Circulator Receiver
    Pashaeifar, Masoud; De Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 11-14, 2022. DOI: 10.1109/RFIC54546.2022.9863209
    Keywords: ... Wireless communication;Circulators;Power amplifiers;Insertion loss;Transmission line measurements;Transceivers;Radiofrequency integrated circuits;Blocker-tolerant receiver;CMOS circulator;FDD;full-duplex;mm-wave;N-path filter;power amplifiers.

  10. A Millimeter-Wave Mutual-Coupling-Resilient Double-Quadrature Transmitter for 5G Applications
    Pashaeifar, Masoud; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Journal of Solid-State Circuits,
    Volume 56, Issue 12, pp. 3784-3798, 2021. DOI: 10.1109/JSSC.2021.3111126
    Keywords: ... 5G mobile communication;Quadrature amplitude modulation;Antennas;Phase modulation;Mixers;Transmitters;Power generation;Balanced power amplifier (PA);calibration free;direct upconverter;double-quadrature;image-rejection ratio (IRR);mutual-coupling;series-Doherty PA;transmitter (TX).

  11. 14.4 A 24-to-30GHz Double-Quadrature Direct-Upconversion Transmitter with Mutual-Coupling-Resilient Series-Doherty Balanced PA for 5G MIMO Arrays
    Pashaeifar, Masoud; de Vreede, Leo C. N.; Alavi, Morteza S.;
    In 2021 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 223-225, 2021. DOI: 10.1109/ISSCC42613.2021.9365776
    Keywords: ... 5G mobile communication;Transmitters;Robustness;Solid state circuits;Loaded antennas;Tuning;Time-varying systems.

  12. On-Chip Output Stage Design for a Continuous Class-F Power Amplifier
    Kumaran, Anil Kumar; Pashaeifar, Masoud; D’Avino, Marco; de Vreede, Leo C. N.; Alavi, Morteza S.;
    In 2021 IEEE International Symposium on Circuits and Systems (ISCAS),
    pp. 1-5, 2021. DOI: 10.1109/ISCAS51556.2021.9401788
    Keywords: ... Radio frequency;Layout;Power amplifiers;Power system harmonics;Harmonic analysis;System-on-chip;Inductors;Continuous class F (CCF);Output matching network;Power amplifier (PA);Harmonic termination;Differential-mode analysis;Common-mode analysis.

  13. A 24-to-32GHz series-Doherty PA with two-step impedance inverting power combiner achieving 20.4dBm Psat and 38%/34% PAE at Psat/6dB PBO for 5G applications
    Pashaeifar, Masoud; Kumaran, Anil K.; Beikmirza, Mohammadreza; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2021 IEEE Asian Solid-State Circuits Conference (A-SSCC),
    pp. 1-3, 2021. DOI: 10.1109/A-SSCC53895.2021.9634772
    Keywords: ... Power transmission lines;5G mobile communication;Power combiners;Broadband amplifiers;Transmitters;Modulation;Throughput.

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Last updated: 29 Sep 2025

Masoud Pashaeifar