Journal Publications
L. Gu, V. Gao, A. Yang, T. Chen and J. Rivas-Davila, “Design Considerations for Multimegahertz Resonant Inductive Power Transfer,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 13, no. 4, pp. 4336-4347, Aug. 2025.
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Conference Publications
F. J. Lynch, J. B. Vyletel, A. Mondal, A. Yang, M. Erdil, F. Aflatouni, L. Gu and M. G. Allen, “An Integrated Photonic Magneto-Optomechanical Modulator for Protection of Switching Power Converters,” 2026 IEEE 39th International Conference on Micro Electro Mechanical Systems (MEMS), Salzburg, Austria, 2026.
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L. Gu, A. Nabih, S. Kudva, M. Mosa, R. Abramson, Y. Elasser and C. T. Gray, “Active Power Buffer for Smoothing GPU Workload Transients in Data Center Power Delivery,” 2026 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2026.
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S. Chen, A. Yang, M. D. Tisdall, M. Taso, G. Mizsei, J. A. Detre and L. Gu, “Design and Characterization of a 64 MHz Power Amplifier for Continuous Arterial Spin Labeling,” 2026 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2026.
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Y. Ding, X. Wang, A. Yang, Y. Zhu, M. Chen, L. Gu and M. G. Allen, “Coaxial Through-Silicon Via Micro-Transformers: Design, Fabrication, and Power Conversion Demonstration,” 2026 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2026.
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X. Wang, F. Jamshed, V. Gao, L. Gu, A. Nasiri and M. G. Allen, “Low Profile, Laminated NiFe Transformers for High-Frequency LLC Resonant Converters,” 2026 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2026.
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A. Yang, X. Wang, S. Chen and L. Gu, “Comparison of 50 MHz Single-Ended and Isolated Push-Pull Class-E Amplifiers,” 2025 IEEE Energy Conversion Congress and Exposition (ECCE), Philadelphia, Pennsylvania, USA, 2025.
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C. Woo, A. Yang, A. Mondal, M. Erdil, F. Aflatouni and L. Gu, “Discrete Demonstration of Heterogeneous Photonic-Electronic Integrated Optical Gate Driver for SiC MOSFETs,” 2025 IEEE 26th Workshop on Control and Modeling of Power Electronics (COMPEL), Knoxville, Tennessee, USA, 2025.
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A. Yang, V. Gao and L. Gu, “An Energy-Efficient Pulsed Magnet for Magnetic Resonance Imaging,” 2025 IEEE 26th Workshop on Control and Modeling of Power Electronics (COMPEL), Knoxville, Tennessee, USA, 2025.
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V. Gao, A. Yang, S. Chen and L. Gu, “Analysis and Comparison of Compensation Networks for Multi-Megahertz Inductive Power Transfer,” 2025 IEEE/AIAA Transportation Electrification Conference and Electric Aircraft Technologies Symposium (ITEC+EATS), Anaheim, CA, USA, 2025. Best Student Paper Award.
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A. Yang and L. Gu, “Novel Pulsed Electromagnet Design with Wide-bandgap Power Semiconductor for Low-field Portable MRI System,” 2025 ISMRM & ISMRT Annual Meeting & Exhibition, Honolulu, Hawaii, on 10-15 May 2025. Conference abstract.
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S. Chen and L. Gu, “A wideband push-pull Φ₂ amplifier with PCB inductors and Rogowski coils for RF plasma generators,” 2024 IEEE 25th Workshop on Control and Modeling for Power Electronics (COMPEL), June 2024.
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X. Wang, S. Chen, Z. Zhang, L. Gu and M. G. Allen, “CMOS-Compatible Microfabrication of Laminated NiFe Cores for Wireless Power Transfer,” 2024 Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head Island, SC, USA, June 2024.
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Selected Earlier Work
L. Gu, G. Zulauf, A. Stein, P. A. Kyaw, T. Chen and J. Rivas-Davila, “6.78 MHz Wireless Power Transfer with Self-Resonant Coils at 95% DC-DC Efficiency,” IEEE Transactions on Power Electronics, vol. 36, no. 3, pp. 2456-2460, March 2021. Transactions Prize Letter Award.
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L. Gu and J. Rivas-Davila, “1.7 kW 6.78 MHz Wireless Power Transfer with Air-Core Coils at 95.7% DC-DC Efficiency,” 2021 IEEE Wireless Power Transfer Conference (WPTC), San Diego, CA, USA, 2021. Best Paper Award Finalist.
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L. Gu, G. Zulauf, Z. Zhang, S. Chakraborty and J. Rivas-Davila, “Push-Pull Class Φ₂ RF Power Amplifier,” IEEE Transactions on Power Electronics, vol. 35, no. 10, pp. 10515-10531, Oct. 2020.
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L. Gu, Q. Stedman, M. Rasmussen, C. Pai, K. Brenner, B. Ma, A. S. Ergun, B. Khuri-Yakub and J. Rivas-Davila, “Multiphase GaN Class-D Resonant Amplifier for High-Intensity Focused Ultrasound,” 2019 IEEE 20th Workshop on Control and Modeling for Power Electronics (COMPEL), Toronto, Canada, 2019.
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More earlier work
Journal Publications
T. Chen, L. Gu, W. Dally, J. Rivas-Davila and J. Fox, “A Novel High-Efficiency Three-Phase Multilevel PV Inverter with Reduced DC-Link Capacitance,” IEEE Transactions on Industrial Electronics, vol. 70, no. 5, pp. 4751-4761, May 2023.
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Z. Tong, L. Gu and J. Rivas-Davila, “Wideband PPT Class Φ₂ Inverter using Phase-Switched Impedance Modulation and Reactance Compensation,” IEEE Transactions on Industrial Electronics, vol. 69, no. 6, pp. 5724-5734, June 2022.
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E. Stolt, W. D. Braun, L. Gu, J. Segovia-Fernandez, S. Chakraborty, R. Lu and J. Rivas-Davila, “Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance,” IEEE Open Journal of Power Electronics, vol. 2, pp. 582-590, 2021.
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W. D. Braun, E. Stolt, L. Gu, J. Segovia-Fernandez, S. Chakraborty, R. Lu and J. Rivas-Davila, “Optimized Resonators for Piezoelectric Power Conversion,” IEEE Open Journal of Power Electronics, vol. 2, pp. 212-224, 2021.
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J. Xu, L. Gu and J. Rivas-Davila, “Effect of Class 2 Ceramic Capacitor Variations on Switched Capacitor and Resonant Switched Capacitor Converters,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 8, no. 3, pp. 2268-2275, Sept. 2020.
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L. Gu, K. Surakitbovorn, G. Zulauf, S. Chakraborty and J. Rivas-Davila, “High-Frequency Bidirectional Resonant Converter for High Conversion Ratio and Variable Load Operation,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 8, no. 3, pp. 1983-1993, Sept. 2020.
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J. Xu, L. Gu, Z. Ye, S. Kargarrazi and J. Rivas-Davila, “Cascode GaN/SiC: A Wide-Bandgap Heterogenous Power Device for High-Frequency Applications,” IEEE Transactions on Power Electronics, vol. 35, no. 6, pp. 6340-6349, June 2020.
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L. Gu, Z. Tong, W. Liang and J. Rivas-Davila, “A Multi-Resonant Gate Driver for High-Frequency Resonant Converters,” IEEE Transactions on Industrial Electronics, vol. 67, no. 2, pp. 1405-1414, Feb. 2020.
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Z. Tong, L. Gu, Z. Ye, K. Surakitbovorn and J. Rivas-Davila, “On the Techniques to Utilize SiC Power Devices in High- and Very High-Frequency Power Converters,” IEEE Transactions on Power Electronics, vol. 34, no. 12, pp. 12181-12192, Dec. 2019.
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W. Liang, C. Charles, L. Raymond, A. Stuchbery, K. Surakitbovorn, L. Gu, R. Boswell and J. Rivas-Davila, “An Integrated RF Power Delivery and Plasma Micro-Thruster System for Nano-Satellites,” Frontiers in Physics, vol. 6, pp. 115, Oct. 2018.
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L. Gu, W. Liang, M. Praglin, S. Chakraborty and J. Rivas-Davila, “A Wide-Input-Range High-Efficiency Step-Down Power Factor Correction Converter Using a Variable Frequency Multiplier Technique,” IEEE Transactions on Power Electronics, vol. 33, no. 11, pp. 9399-9411, Nov. 2018.
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Y. Qu, P. G. Campbell, L. Gu, J. M. Knipe, E. Dzenitis, J. G. Santiago and M. Stadermann, “Energy Consumption Analysis of Constant Voltage and Constant Current Operations in Capacitive Deionization,” Desalination, vol. 400, pp. 18–24, 2016.
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Conference Publications
T. F. Chen, L. Gu, W. Dally and J. Fox, “Hardware Demonstration of a Novel Three-Phase Multilevel Inverter,” 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022.
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Z. Ye, Z. Tong, L. Gu and J. Rivas-Davila, “A High Frequency Resonant Gate Driver for SiC MOSFETs,” 2021 IEEE 22nd Workshop on Control and Modeling for Power Electronics (COMPEL), 2021. Best Paper Award.
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W. D. Braun, E. A. Stolt, L. Gu and J. M. Rivas-Davila, “Reverse Recovery Testing of Small-Signal Schottky Diodes,” 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021.
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Z. Tong, L. Gu and J. Rivas-Davila, “Wideband Class Φ2 Power Amplifier for HF Applications,” 2021 IEEE MTT-S International Microwave Symposium (IMS), Atlanta, GA, USA, 2021.
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L. Gu, G. Zulauf, A. Stein, P. A. Kyaw, T. Chen and J. Rivas-Davila, “Design and Optimization of 6.78 MHz Wireless Power Transfer with Self-Resonant Coils,” 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), Aalborg, Denmark, 2020.
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D. Ji, B. Ercan, J. Zhuang, L. Gu, J. Rivas and S. Chowdhury, “Demonstration of GaN Impact Ionization Avalanche Transit-Time (IMPATT) Diode,” 2020 Device Research Conference (DRC), Columbus, OH, USA, 2020.
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Q. Stedman, L. Gu, C. Pai, M. Rasmussen, K. Brenner, B. Ma, A. S. Ergun, J. Rivas-Davila and B. Khuri-Yakub, “Compact Fast-Switching DC and Resonant RF Drivers for a Dual-Mode Imaging and HIFU 2D CMUT Array,” 2019 IEEE International Ultrasonics Symposium (IUS), Glasgow, United Kingdom, 2019.
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Z. Tong, L. Gu, K. Surakitbovorn and J. Rivas, “Gate Drive for Very Fast Resonant Conversion using SiC Switch,” 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, 2019.
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K. Surakitbovorn, L. Gu and J. Rivas-Davila, “On the Optimal Input Voltage of a Class-E Power Amplifier with GaN HEMTs at MHz Frequency Operation,” 2019 IEEE 20th Workshop on Control and Modeling for Power Electronics (COMPEL), Toronto, Canada, 2019.
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J. Xu, L. Gu and J. Rivas-Davila, “Low-Loss Gate Driving Techniques of the Cascode GaN/SiC Power Device at High Frequencies,” 2019 IEEE 20th Workshop on Control and Modeling for Power Electronics (COMPEL), Toronto, Canada, 2019.
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S. Park, L. Gu and J. Rivas-Davila, “A Compact 45 V-to-54 kV Modular DC-DC Converter,” 2019 IEEE 20th Workshop on Control and Modeling for Power Electronics (COMPEL), Toronto, Canada, 2019.
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W. Braun, L. Gu, G. Scott and J. Rivas-Davila, “MRI Compatible DC Modulator for an Envelope Tracking Transmitter,” 2019 IEEE 20th Workshop on Control and Modeling for Power Electronics (COMPEL), Toronto, Canada, 2019.
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J. Xu, L. Gu, Z. Ye, S. Kargarrazi and J. Rivas-Davila, “Cascode GaN/SiC Power Device for MHz Switching,” 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), Anaheim, CA, USA, 2019.
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L. Gu, K. Surakitbovorn, G. Zulauf, S. Chakraborty and and J. Rivas-Davila, “High-Frequency Bidirectional Resonant Converter for High Conversion Ratio and Variable Load Operation,” 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), Padua, Italy, 2018. Best Paper Award.
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Y. Li, L. Gu, A. Hariya, Y. Ishizuka, J. Rivas-Davila and S. Sanders, “A Wide Input Range Isolated Stacked Resonant Switched-Capacitor DC-DC Converter for High Conversion Ratios,” 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), Padua, Italy, 2018.
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J. Xu, L. Gu, E. Hernandez and J. Rivas-Davila, “Effect of Class 2 Ceramic Capacitance Variations on Switched Capacitor and Resonant Switched Capacitor Converters,” 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), Padua, Italy, 2018.
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L. Gu, K. Surakitbovorn and J. Rivas-Davila, “High-Frequency Resonant Converter with Synchronous Rectification for High Conversion Ratio and Variable Load Operation,” 2018 International Power Electronics Conference (IPEC-Niigata 2018 - ECCE ASIA), Niigata, Japan, 2018.
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S. Park, L. Gu and J. Rivas-Davila, “60 V-to-35 kV input-parallel output-series DC-DC converter using multi-level class-DE rectifiers,” 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, 2018.
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L. Gu, W. Liang and J. Rivas-Davila, “Design of very-high-frequency synchronous resonant DC-DC converter for variable load operation,” 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, 2017.
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L. Gu, W. Liang and J. Rivas-Davila, “A multi-resonant gate driver for Very-High-Frequency (VHF) resonant converters,” 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, 2017.
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W. Liang, X. Cui, L. Raymond, L. Gu, C. Charles, R. Boswell and J. Rivas-Davila, “A compact RF power inverter with reduced EMI for a CubeSat electrothermal micro-thruster,” 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, 2017.
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L. Gu, W. Liang, M. Praglin, S. Chakraborty and J. Rivas-Davila, “Universal line input power factor preregulator using VFX technique,” 2017 IEEE Applied Power Electronics Conference and Exposition (APEC), Tampa, FL, 2017.
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L. Raymond, W. Liang, L. Gu and J. R. Davila, “13.56 MHz high voltage multi-level resonant DC-DC converter,” 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics (COMPEL), Vancouver, BC, 2015. Best Paper Award.
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L. Gu, W. Liang, L. C. Raymond and J. Rivas, “27.12MHz GaN Bi-directional resonant power converter,” 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics (COMPEL), Vancouver, BC, 2015.
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W. Liang, L. Raymond, L. Gu and J. Rivas, “27.12MHz GaN resonant power converter with PCB embedded resonant air core inductors and capacitors,” 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, 2015.
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