Electronic Instrumentation Laboratory
Department of Microelectronics

MSc Huajun Zhang

PhD student
Electronic Instrumentation (EI), Department of Microelectronics

Expertise: Power efficient SAR and sigma-delta converters.

Themes: Precision Analog

Biography

Huajun Zhang was born in Beijing, China. He obtained the B.E. degree in Electrical and Computer Engineering from Shanghai Jiao Tong University in 2015 and the B.S.E. and M.S. degrees in Electrical Engineering from the University of Michigan, Ann Arbor in 2015 and 2017, respectively. In the summer of 2016, he was an analog/mixed-signal design intern at Analog Devices, Inc., Wilmington, MA, USA. From May 2017 to February 2019, he was a Mixed Signal Design Engineer with Analog Devices, Inc., Norwood, MA, USA. Mr. Zhang joins the Electronic Instrumentation Laboratory at TU Delft in March 2019 where he is pursuing the Ph.D. degree in Microelectronics. His technical interests include precision analog circuits and data converters.

Mr. Zhang has published three peer-reviewed journal papers on SAR and sigma-delta converters and has one US patent pending. He has been a reviewer for IEEE Transactions on Circuits and Systems I: Regular Papers and IEEE Sensors Journal.

Next Generation Class-D Audio Amplifiers

Next-Generation Class-D Audio Amplifier

  1. A 120.9-dB DR Digital-Input Capacitively Coupled Chopper Class-D Audio Amplifier
    Zhang, Huajun; Berkhout, Marco; Makinwa, Kofi A. A.; Fan, Qinwen;
    IEEE Journal of Solid-State Circuits,
    pp. 1-11, 2023. DOI: 10.1109/JSSC.2023.3318731

  2. A 120.9dB DR, -111.2dB THD+N Digital-Input Capacitively-Coupled Chopper Class-D Audio Amplifier
    Zhang, Huajun; Berkhout, Marco; Makinwa, Kofi A. A.; Fan, Qinwen;
    In 2023 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 54-56, 2023. DOI: 10.1109/ISSCC42615.2023.10067400

  3. A 121.4-dB DR Capacitively Coupled Chopper Class-D Audio Amplifier
    Zhang, Huajun; Berkhout, Marco; Makinwa, Kofi A. A.; Fan, Qinwen;
    IEEE Journal of Solid-State Circuits,
    Volume 57, Issue 12, pp. 3736-3745, 2022. DOI: 10.1109/JSSC.2022.3207907

  4. A −121.5-dB THD Class-D Audio Amplifier With 49-dB LC Filter Nonlinearity Suppression
    Zhang, Huajun; Berkhout, Marco; Makinwa, Kofi A. A.; Fan, Qinwen;
    IEEE Journal of Solid-State Circuits,
    Volume 57, Issue 4, pp. 1153-1161, 2022. DOI: 10.1109/JSSC.2021.3125526

  5. A 121.4dB DR, -109.8dB THD+N Capacitively-Coupled Chopper Class-D Audio Amplifier
    Zhang, Huajun; Berkhout, Marco; Makinwa, Kofi A. A.; Fan, Qinwen;
    In 2022 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 1-3, 2022. DOI: 10.1109/ISSCC42614.2022.9731737

  6. A High-Linearity and Low-EMI Multilevel Class-D Amplifier
    Zhang, Huajun; Karmakar, Shoubhik; Breems, Lucien J.; Sandifort, Quino; Berkhout, Marco; Makinwa, Kofi A. A.; Fan, Qinwen;
    IEEE Journal of Solid-State Circuits,
    Volume 56, Issue 4, pp. 1176-1185, 2021. DOI: 10.1109/JSSC.2020.3043815

  7. A −121.5 dB THD Class-D Audio Amplifier with 49 dB Suppression of LC Filter Nonlinearity and Robust to +/−30% LC Filter Spread
    Zhang, Huajun; Berkhout, Marco; Makinwa, Kofi; Fan, Qinwen;
    In 2021 Symposium on VLSI Circuits,
    pp. 1-2, 2021. DOI: 10.23919/VLSICircuits52068.2021.9492441

  8. A 28-W, −102.2-dB THD+N Class-D Amplifier Using a Hybrid ΔΣM-PWM Scheme
    Karmakar, Shoubhik; Zhang, Huajun; van Veldhoven, Robert; Breems, Lucien J.; Berkhout, Marco; Fan, Qinwen; Makinwa, Kofi A. A.;
    IEEE Journal of Solid-State Circuits,
    Volume 55, Issue 12, pp. 3146-3156, 2020. DOI: 10.1109/JSSC.2020.3023874

  9. A −107.8 dB THD+N Low-EMI Multi-Level Class-D Audio Amplifier
    Zhang, Huajun; Karmakar, Shoubhik; Breems, Lucien; Sandifort, Quino; Berkhout, Marco; Makinwa, Kofi; Fan, Qinwen;
    In 2020 IEEE Symposium on VLSI Circuits,
    pp. 1-2, 2020. DOI: 10.1109/VLSICircuits18222.2020.9162793

  10. A 28W -108.9dB/-102.2dB THD/THD+N Hybrid $\Delta\Sigma-$-PWM Class-D Audio Amplifier with 91% Peak Efficiency and Reduced EMI Emission
    Karmakar, Shoubhik; Zhang, Huajun; Van Veldhoven, Robert; Breems, Lucien; Berkhout, Marco; Fan, Qinwen; Makinwa, Kofi A.A.;
    In 2020 IEEE International Solid-State Circuits Conference - (ISSCC),
    pp. 350-352, 2020. DOI: 10.1109/ISSCC19947.2020.9063001

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Last updated: 3 Oct 2022

Huajun Zhang