Electronics Research Laboratory
Dept. of Microelectronics

Mohammad Reza Beikmirza

Publications

  1. 5.8 A 20W CMOS/LDMOS All-Digital Transmitter with Dynamic Retiming and Glitch-Free Phase Mapper, Achieving 68%/62% Peak Drain/System Efficiency
    Mul, Dieuwert Peter Nicolaas; Bootsman, Rob J; Beikmirza, Mohammadreza; El Boustani, Ossama; Shen, Yiyu; Maassen, Daniel; van Velzen, Bart; Rousstia, Mohadig; Koster, Ronald; Gajadharsing, John R; Fritzsch, Thomas; Alavi, Morteza; De Vreede, Leo C.N.;
    In 2025 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 104-106, 2025. DOI: 10.1109/ISSCC49661.2025.10904650
    Keywords: ... Base stations;Frequency modulation;Transmitters;Switches;Logic gates;Solid state circuits;Wideband;Signal resolution;Power generation;Switching circuits.

  2. The Efficiency and Power Utilization of Current-Scaling Digital Transmitters
    Mul, Dieuwert P. N.; Bootsman, Robert J.; Beikmirza, Mohammadreza; Alavi, Morteza S.; Vreede, Leo C. N. de;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 72, Issue 7, pp. 4350-4366, 2024. DOI: 10.1109/TMTT.2023.3336984
    Keywords: ... Switches;Radio frequency;Logic gates;Transmitters;Power generation;Loading;Power amplifiers;Current control;Peak to average power ratio;Current mode;current scaling;digital transmitter (DTX);Doherty;efficiency;multiphase;peak-to-average-power ratio (PAPR);polar;power utilization;RF-DAC;signed Cartesian (SC);upconversion.

  3. MP-DPD: Low-Complexity Mixed-Precision Neural Networks for Energy-Efficient Digital Predistortion of Wideband Power Amplifiers
    Wu, Yizhuo; Li, Ang; Beikmirza, Mohammadreza; Singh, Gagan Deep; Chen, Qinyu; de Vreede, Leo C. N.; Alavi, Morteza; Gao, Chang;
    IEEE Microwave and Wireless Technology Letters,
    Volume 34, Issue 6, pp. 817-820, 2024. DOI: 10.1109/LMWT.2024.3386330
    Keywords: ... Power demand;Quantization (signal);Neural networks;Logic gates;Energy efficiency;Wideband;Data models;Digital systems;Deep neural network (DNN);digital predistortion (DPD);digital transmitter (DTX);power amplifier (PA);quantization.

  4. OpenDPD: An Open-Source End-to-End Learning & Benchmarking Framework for Wideband Power Amplifier Modeling and Digital Pre-Distortion
    Wu, Yizhuo; Singh, Gagan Deep; Beikmirza, Mohammadreza; de Vreede, Leo C. N.; Alavi, Morteza; Gao, Chang;
    In 2024 IEEE International Symposium on Circuits and Systems (ISCAS),
    pp. 1-5, 2024. DOI: 10.1109/ISCAS58744.2024.10558162
    Keywords: ... Codes;Transmitters;OFDM;Power amplifiers;Artificial neural networks;Documentation;Benchmark testing;digital pre-distortion;behavioral modeling;deep neural network;power amplifier;digital transmitter.

  5. A Wideband Energy-Efficient Multi-Mode CMOS Digital Transmitter
    Beikmirza, Mohammadreza; Shen, Yiyu; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Journal of Solid-State Circuits,
    Volume 58, Issue 3, pp. 677-690, 2023. DOI: 10.1109/JSSC.2022.3222028
    Keywords: ... Radio frequency;Clocks;Baseband;Wideband;OFDM;Power generation;Mixers;Balun;Cartesian;CMOS;digital power amplifier (DPA);digital pre-distortion (DPD);digital transmitter (DTX);efficient;load insensitive class-E;Marchand;multi-phase;radio frequency digital-to-analog converter (RF-DAC);reactance compensation;re-entrant;wideband.

  6. A Low-Complexity Digital Predistortion Technique For Digital I/Q Transmitters
    Beikmirza, Mohammadreza; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023,
    pp. 787-790, 2023. DOI: 10.1109/IMS37964.2023.10187914
    Keywords: ... Microwave measurement;Constellation diagram;Transmitters;Bandwidth;Microwave theory and techniques;Predistortion;Digital pre-distortion;DPD;constellation;mapping;digital transmitter;RF-DAC.

  7. A Wideband Two-Way Digital Doherty Transmitter in 40nm CMOS
    Beikmirza, Mohammadreza; Shen, Yiyu; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022,
    pp. 975-978, 2022. DOI: 10.1109/IMS37962.2022.9865506
    Keywords: ... Transmitters;Power combiners;OFDM;Power amplifiers;Microwave amplifiers;Wideband;Power generation;Cartesian;class-E;Doherty;efficient;wideband;digital power amplifier;RF-DAC;DPD;DTX;Balun;CMOS.

  8. A 1-to-4GHz Multi-Mode Digital Transmitter in 40nm CMOS Supporting 200MHz 1024-QAM OFDM signals with more than 23dBm/66% Peak Power/Drain Efficiency
    Beikmirza, Mohammadreza; Shen, Yiyu; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2022 IEEE Custom Integrated Circuits Conference (CICC),
    pp. 01-02, 2022. DOI: 10.1109/CICC53496.2022.9772797
    Keywords: ... Transmitters;OFDM;Modulation;Nanoscale devices;Energy efficiency;Delays;Synchronization.

  9. A Wideband Four-Way Doherty Bits-In RF-Out CMOS Transmitter
    Beikmirza, Mohammadreza; Shen, Yiyu; de Vreede, Leo C. N.; Alavi, Morteza S.;
    IEEE Journal of Solid-State Circuits,
    Volume 56, Issue 12, pp. 3768-3783, 2021. DOI: 10.1109/JSSC.2021.3105542
    Keywords: ... Clocks;OFDM;Logic gates;Wideband;Constellation diagram;Baseband;Timing;50%-LO clock distribution;8-shape inductor/balun;current-mode class-D (CMCD);efficiency enhancement;in-phase/quadrature (I/Q) interleaving;radio frequency digital-to-analog converter (RF-DAC);sign-bit.

  10. 6.2 A 4-Way Doherty Digital Transmitter Featuring 50%-LO Signed IQ Interleave Upconversion with more than 27dBm Peak Power and 40% Drain Efficiency at 10dB Power Back-Off Operating in the 5GHz Band
    Beikmirza, Mohammadreza; Shen, Yiyu; Mehrpoo, Mohammadreza; Hashemi, Mohsen; Mul, Dieuwert; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2021 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 92-94, 2021. DOI: 10.1109/ISSCC42613.2021.9365831
    Keywords: ... Wireless communication;Transmitters;Peak to average power ratio;Nanoscale devices;Solid state circuits;Wideband;Standards.

  11. 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.

  12. A Versatile and Efficient 0.1-to-11 Gb/s CML Transmitter in 40-nm CMOS
    Feng, Jun; Beikmirza, Mohammadreza; Mehrpoo, Mohammadreza; de Vreede, Leo C.N.; Alavi, Morteza S.;
    In 2021 18th International SoC Design Conference (ISOCC),
    pp. 41-42, 2021. DOI: 10.1109/ISOCC53507.2021.9613887
    Keywords: ... Transmitters;Bit error rate;Prototypes;Frequency division multiplexing;Frequency synchronization;Standards;Clocks.

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