Electronics Research Laboratory
Dept. of Microelectronics

Yizhuo Wu

Publications

  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. DeltaDPD: Exploiting Dynamic Temporal Sparsity in Recurrent Neural Networks for Energy-Efficient Wideband Digital Predistortion
    Wu, Yizhuo; Zhu, Yi; Qian, Kun; Chen, Qinyu; Zhu, Anding; Gajadharsing, John; de Vreede, Leo C. N.; Gao, Chang;
    IEEE Microwave and Wireless Technology Letters,
    Volume 35, Issue 6, pp. 772-775, 2025. DOI: 10.1109/LMWT.2025.3565004
    Keywords: ... Vectors;Recurrent neural networks;Wideband;Radio frequency;Predistortion;Artificial neural networks;Logic gates;Computational modeling;Arithmetic;Wireless communication;Digital predistortion (DPD);digital signal processing (DSP);power amplifier (PA);recurrent neural network (RNN);temporal sparsity.

  3. DPD-NeuralEngine: A 22-nm 6.6-TOPS/W/mm2 Recurrent Neural Network Accelerator for Wideband Power Amplifier Digital Pre-Distortion
    Li, Ang; Wu, Haolin; Wu, Yizhuo; Chen, Qinyu; de Vreede, Leo C. N.; Gao, Chang;
    In 2025 IEEE International Symposium on Circuits and Systems (ISCAS),
    pp. 1-5, 2025. DOI: 10.1109/ISCAS56072.2025.11043563
    Keywords: ... Wireless communication;Power measurement;Measurement uncertainty;Power amplifiers;Artificial neural networks;Throughput;Hardware;Vectors;Software;Wideband;Deep Neural Network;Digital Pre-distortion;Software-Hardware Co-Design;ASIC;FPGA.

  4. 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.

  5. 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.

  6. A 3.5-6.8GHz wide-bandwidth DTC-assisted fractional-N all-digital PLL with a MASH Sigma-Delta TDC for low in-band phase noise
    Y. Wu; M. Shahmohammadi; Y. Chen; P. Lu; R. B. Staszewski;
    In ESSCIRC Conference 2016: 42nd European Solid-State Circuits Conference,
    pp. 209-212, Sept 2016. DOI: 10.1109/ESSCIRC.2016.7598279
    Keywords: ... delta-sigma modulation;digital phase locked loops;integrated circuit noise;jitter;oscillators;phase noise;time-digital conversion;ADPLL;DTC-assisted fractional-N all-digital PLL;MASH ΔΣ TDC;digital-to-time converter;frequency 1.73 GHz to 3.38 GHz;frequency 3.5 GHz to 6.8 GHz;integrated jitter;low-in-band phase noise;power 10.7 mW;size 40 nm;wide-tuning range DCO;wide-tuning range digitally-controlled oscillator;Delays;Frequency measurement;Jitter;Multi-stage noise shaping;Phase locked loops;Phase noise;Tuning;All digital PLL;BBPD;DCO;DTC;MASH;TDC;noise shaping;wide-bandwidth;wide-tuning range.

  7. A 0.5ps 1.4mW 50MS/s Nyquist bandwidth time amplifier based two-step flash- #x0394; #x03A3; time-to-digital converter
    Y. Wu; R. B. Staszewski;
    In 2016 Second International Conference on Event-based Control, Communication, and Signal Processing (EBCCSP),
    pp. 1-4, June 2016. DOI: 10.1109/EBCCSP.2016.7605282
    Keywords: ... CMOS digital integrated circuits;amplifiers;delta-sigma modulation;nanoelectronics;time-digital conversion;CMOS;Nyquist bandwidth time amplifier;current 1.3 mA;integrated TDC error;power 1.4 mW;shaped quantization noise;size 40 nm;time 0.5 ps;two-step flash-ΔΣ time-to-digital converter;voltage 1.1 V;Adders;Bandwidth;Calibration;Delays;Multi-stage noise shaping;Quantization (signal);Time-domain analysis;MASH;Noise shaping;TDC;error feedback;time amplifier;time domain register;time-interleaved;two-step.

  8. A 103fsrms 1.32mW 50MS/s 1.25MHz bandwidth two-step flash- #x0394; #x03A3; time-to-digital converter for ADPLL
    Y. Wu; P. Lu; R. B. Staszewski;
    In 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 95-98, May 2015.

  9. A 56.4-to-63.4 GHz Multi-Rate All-Digital Fractional-N PLL for FMCW Radar Applications in 65 nm CMOS
    W. Wu; R. B. Staszewski; J. R. Long;
    IEEE Journal of Solid-State Circuits,
    Volume 49, Issue 5, pp. 1081-1096, May 2014.

  10. Design for test of a mm-Wave ADPLL-based transmitter
    W. Wu; R. B. Staszewski; J. R. Long;
    In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference,
    pp. 1-8, Sept 2014.

  11. High-Resolution Millimeter-Wave Digitally Controlled Oscillators With Reconfigurable Passive Resonators
    W. Wu; J. R. Long; R. B. Staszewski;
    IEEE Journal of Solid-State Circuits,
    Volume 48, Issue 11, pp. 2785-2794, Nov 2013.

  12. A mm-Wave FMCW radar transmitter based on a multirate ADPLL
    W. Wu; X. Bai; R. B. Staszewski; J. R. Long;
    In 2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 107-110, June 2013.

  13. A 56.4-to-63.4GHz spurious-free all-digital fractional-N PLL in 65nm CMOS
    W. Wu; X. Bai; R. B. Staszewski; J. R. Long;
    In 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers,
    pp. 352-353, Feb 2013.

  14. Millimeter-Wave Digitally-Assisted Frequency Synthesizer in CMOS
    W. Wu;
    PhD thesis, Delft University of Technology, 09 2013. Promotor: R.B. Staszewski and J.R. Long.

  15. Millimeter-Wave Digitally-Assisted Frequency Synthesizer in CMOS
    W. Wu;
    PhD thesis, Delft University of Technology, http://doi.org/10.4233/uuid:fffc705a-ed90-4228-bd12-b6daa8cc13a2, 09 2013. Promotor: R.B. Staszewski and J.R. Long.

  16. Passive Circuit Technologies for mm-Wave Wireless Systems on Silicon
    J. R. Long; Y. Zhao; W. Wu; M. Spirito; L. Vera; E. Gordon;
    IEEE Transactions on Circuits and Systems I: Regular Papers,
    Volume 59, Issue 8, pp. 1680-1693, Aug 2012.

  17. High-resolution 60-GHz DCOs with reconfigurable distributed metal capacitors in passive resonators
    W. Wu; J. R. Long; R. B. Staszewski; J. J. Pekarik;
    In 2012 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 91-94, June 2012.

  18. Circuit technologies for mm-wave wireless systems on silicon
    J. R. Long; Y. Zhao; Y. Jin; W. Wu; M. Spirito;
    In 2011 IEEE Custom Integrated Circuits Conference (CICC),
    pp. 1-8, Sept 2011.

  19. A new extraction technique for the series resistances of semiconductor devices based on the intrinsic properties of bias-dependent y-parameters [bipolar transistor examples]
    Cuoco, V.; Neo, W.C.E.; de Vreede, L.C.N.; de Graaff, H.C.; Nanver, L.K.; Buisman, K.; Wu, H.C.; Jos, H.F.F.; Burghartz, J.N.;
    In Bipolar/BiCMOS Circuits and Technology, 2004. Proceedings of the 2004 Meeting,
    pp. 148-151, 2004. DOI: 10.1109/BIPOL.2004.1365766

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