Publication

A Stacked Radial Mode Lithium Niobate Transformer for DC-DC Conversion

Conference

COMPEL

Eric Stolt, Clarissa Daniel, Juan Rivas

Voltage Waveform Generation for Sawyer-Tower C_OSS Loss Measurements Using a Hybrid Power Converter

Conference

PCIM Europe

Malachi Hornbuckle, Steven Abrego, Katherine Liang, Sára Davidová, Zikang Tong, Juan Rivas

Piezoelectric Based Class-E Resonant Inverter for Driving Surface Dielectric Barrier Discharge Plasma

Conference

ECCE Asia

Mingyu Yang, Eric Stolt, Zhechi Ye, Juan Rivas

A Stacked Piezoelectric Converter Using a Segmented IDT Lithium Niobate Resonator

Journal

IEEE OJPE

Weston Braun, Eric Stolt, Kristi Nguyen, Jeronimo Segovia-Fernandez, Sombuddha Chakraborty, Ruochen Lu, Juan Rivas

A Spurious-Free Piezoelectric Resonator Based 3.2 kW DC–DC Converter for EV On-Board Chargers

Journal

IEEE TPELS

Eric Stolt, Weston Braun, Kristi Nguyen, Vakhtang Chulukhadze, Ruochen Lu, Juan Rivas

Near Spurious-Free Thickness Shear Mode Lithium Niobate Resonator for Piezoelectric Power Conversion

Journal

IEEE TUFFC

Kristi Nguyen, Vakhtang Chulukhadze, Eric Stolt, Weston Braun, Jeronimo Segovia-Fernandez, Sombuddha Chakraborty, Juan Rivas, Ruochen Lu

Spurious-Free Lithium Niobate Bulk Acoustic Resonator for Piezoelectric Power Conversion

Conference

EFTF/IFCS

Kristi Nguyen, Eric Stolt, Weston Braun, Vakhtang Chulukhadze, Jeronimo Segovia-Fernandez, Sombuddha Chakraborty, Juan Rivas, Ruochen Lu

Near-Spurious-Free Lithium Niobate Resonator for Piezoelectric Power Conversion with Q of 3500 and k2t of 45%

Conference

IUS

Kristi Nguyen, Eric Stolt, Weston Braun, Jeronimo Segovia-Fernandez, Sombuddha Chakraborty, Juan Rivas, Ruochen Lu

Forward-Zero Cycle Closed-Loop Control of Piezoelectric Resonator DC-DC Converters

Conference

COMPEL

Eric Stolt, Weston Braun, Juan Rivas

1 kW MHz Wideband Class E Power Amplifier

Journal

IEEE OJPE

Jiale Xu, Zikang Tong, Juan Rivas-Davila

Apparatuses and methods involving power conversion using multiple rectifier circuits

Patent

Juan Rivas-Davila, Lei Gu, Luke Raymond, Sanghyeon Park

Apparatus and methods involving control of piezoelectric resonance circuits

Patent

Eric Stolt, Juan Rivas-Davila, Weston Braun

Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance

Journal

IEEE OJPE

Eric A. Stolt, Weston D. Braun, Lei Gu, Jeronimo Segovia-Fernandez, Sombuddha Chakraborty, Ruochen Lu, Juan Manuel Rivas Davila

Real-time Selective Harmonic Minimization using a Hybrid Analog/Digital Computing Method

Journal

IEEE TPELS

Jason Poon, Mohit Sinha, Sairaj V. Dhople and, Juan Manuel Rivas Davila

Class E Power Amplifier with Piezoelectric Resonator Output Branch

Conference

COMPEL

Clarissa Daniel, Eric Stolt, Juan Rivas

Piezoelectric Resonator Second Harmonic Cancellation in Class Φ2 Inverters

Conference

COMPEL

Eric Stolt, Weston Braun, Clarissa Daniel, Juan Rivas

Reverse Recovery Testing of Small-Signal Schottky Diodes

Conference

ECCE

W. Braun, E. Stolt, L. Gu and J. Rivas-Davila

Circuitry and methodology benefiting from reduced gate loss

Patent

Juan Rivas-Davila, Jiale Xu and Lei Gu

Wideband PPT Class Φ2 Inverter using Phase-Switched Impedance Modulation and Reactance Compensation

Journal

IEEE TIE

Z. Tong, 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

Conference

WPTC

L. Gu and J. Rivas-Davila

Passive components for electronic circuits using conformal deposition on a scaffold

Patent

Juan M. Rivas Davila, Wei Liang and Luke C. Raymond

Bipolar DC-DC converter topology using passive voltage reversal

Patent

Luke C. Raymond, Wei Liang, Kawin Surakitbovorn, Juan M. Rivas Davila

Optimized Resonators for Piezoelectric Power Conversion

Journal

IEEE OJPE

Weston D. Braun, Eric A. Stolt, Lei Gu, Jeronimo Segovia-Fernandez, Sombuddha Chakraborty, Ruochen Lu, Juan M. Rivas-Davila

Small- and Large-Signal Dynamic Output Capacitance and Energy Loss in GaN-on-Si Power HEMTs

Journal

J. Zhuang, G. Zulauf, J. Roig-Guitart, J. Plummer and J. Rivas

Compact Fast-Switching DC and Resonant RF Drivers for a Dual-Mode Imaging and HIFU 2D CMUT Array

Conference

IUS

Q. Stedman, L. Gu, C. Pai, M. Rasmussen, K. Brenner, B. Ma, A. Ergun, J. Rivas Davila, B. Khuri-Yakub

1 kW, Multi-MHz Wireless Charging for Electric Transportation

Conference

COMPEL

T. Phan, G. Zulauf, J. A. Fan and J. M. Rivas-Davila,

Design and Optimization of 6.78 MHz Wireless Power Transfer with Self-Resonant Coils

Conference

COMPEL

L. Gu, G. Zulauf, A. Stein, P. A. Kyaw, T. Chen and J. M. Rivas-Davila

Low-Ripple High-Voltage DC Generation Using a Serially Segmented Multiphase Voltage Multiplier

Conference

ECCE

S. Park and J. Rivas-Davila

A physical investigation of large-signal dynamic output capacitance and energy loss in GaN-on-Si power HEMTs at high-frequency applications

Conference

ECCE

J. Zhuang, G. Zulauf, J. Roig, J. D. Plummer and J. Rivas-Davila

Origins of Soft-switching Coss Losses in SiC Power MOSFETs and Diodes for Resonant Converter Applications

Journal

Z. Tong, J. Roig-Guitart, T. Neyer, J. D. Plummer and J. M. Rivas-Davila

Decentralized Carrier Phase Shifting for Optimal Harmonic Minimization in Asymmetric Parallel-Connected Inverters

Journal

J. Poon, B. Johnson, S. V. Dhople and J. Rivas-Davila

Modular ON/OFF and Phase-Shifting for High-Speed Radio Frequency Power Modulation

Journal

K. Surakitbovorn and J. M. Rivas-Davila

Time and voltage domain load models for appliance-level grid edge simulation and control

Journal

Aaron Goldin, Elizabeth Buechler, Ram Rajagopal, Juan Rivas-Davila

6.78-MHz Wireless Power Transfer With Self-Resonant Coils at 95% DC–DC Efficiency

Journal

L. Gu, G. Zulauf, A. Stein, P. A. Kyaw, T. Chen and J. M. R. Davila

A Simple Method to Combine the Output Power from Multiple Class-E Power Amplifiers

Journal

K. Surakitbovorn and J. M. Rivas-Davila

Demonstration of GaN Impact Ionization Avalanche Transit-Time (IMPATT) Diode

Conference

DRC

D. Ji, B. Ercan, J. Zhuang, L. Gu, J. Rivas-Davila and S. Chowdhury

The Impact of Multi-MHz Switching Frequencies on Dynamic On-Resistance in GaN-on-Si HEMTs

Journal

G. Zulauf, M. Guacci, J. M. Rivas-Davila and J. W. Kolar

Inductorless Soft Switching DC-DC Converter with an Optimized Piezoelectric Resonator

Conference

APEC

W. D. Braun, Z. Tong and J. Rivas-Davila

Optimized Design of Multi-MHz Frequency Isolated Auxiliary Power Supply for Gate Drivers in Medium-Voltage Converters

Journal

O. Spro, S. Park, J. Rivas-Davila, D Peftitsis, O. Midtgård and T. Undeland

Lightweight High Voltage Generator for Untethered Electroadhesive Perching of Micro Air Vehicles

Letters

S. Park, D. S. Drew, S. Follmer, and J. Rivas-Davila

Push–Pull Class Φ2 RF Power Amplifier

Journal

L. Gu, G. Zulauf, Z. Zhang, S. Chakraborty, J. Rivas-Davila

Design and Fabrication of Three-Dimensional Printed Air-Core Transformers for High-Frequency Power Applications

Journal

Z. Tong, W. D. Braun and J. M. Rivas-Davila

Gate Drive for Very Fast Resonant Conversion using SiC Switch

Conference

ECCE

Z. Tong, L. Gu, K. Surakitbovorn and J. M. Rivas-Davila

Miniature High-Voltage DC-DC Power Converters for Space and Micro-Robotic Applications

Conference

ECCE

S. Park, A. Goldin and J. Rivas-Davila

Cascode GaN/SiC: A Wide-Bandgap Heterogenous Power Device for High-Frequency Applications

Journal

J. Xu, L. Gu, Z. Ye, S. Kargarrazi and J. M. Rivas-Davila

Effect of Class 2 Ceramic Capacitor Variations on Switched-Capacitor and Resonant Switched-Capacitor Converters,

Journal

J. Xu, L. Gu and J. Rivas-Davila

A Method to Eliminate Discrete Inductors in a Class-E Inverter Used in Wireless Power Transfer Applications

Journal

K. Surakitbovorn and J. M. Rivas-Davila

On the Optimization of a Class-E Power Amplifier With GaN HEMTs at Megahertz Operation

Journal

K. Surakitbovorn and J. M. Rivas-Davila

High-Frequency Bidirectional Resonant Converter for High Conversion Ratio and Variable Load Operation

Journal

IEEE JESTPE

L. Gu, K. Surakitbovorn, G. Zulauf, S. Chakraborty and J. Rivas-Davila

Single-Turn Air-Core Coils for High-Frequency Inductive Wireless Power Transfer

Journal

IEEE TPELS

G. Zulauf and J. M. Rivas-Davila

3-D Printed Air-Core Toroidal Transformer for High-Frequency Power Conversion

Conference

COMPEL

Z. Tong, W. D. Braun and J. M. Rivas-Davila

A Compact 45 V-to-54 kV Modular DC-DC Converter

Conference

COMPEL

S. Park, L. Gu and J. Rivas-Davila

On the Optimal Input Voltage of a Class-E Power Amplifier with GaN HEMTs at MHz Frequency Operation

Conference

COMPEL

K. Surakitbovorn, L. Gu and J. Rivas-Davila

An Investigation into the Causes of COSS Losses in GaN-on-Si HEMTs

Conference

COMPEL

J. Zhuang, G. Zulauf, J. Roig, J. D. Plummer and J. Rivas-Davila

Multiphase GaN Class-D Resonant Amplifier for High-Intensity Focused Ultrasound

Conference

COMPEL

L. Gu, Q. Stedman, M. Rasmussen, Ch. Pai, K. Brenner, B. Ma, A. Ergun, B. Khuri-Yakub, Juan Rivas Davila

MRI Compatible DC Modulator for an Envelope Tracking Transmitter,

Conference

COMPEL

W. D. Braun, L. Gu, G. Scott and J. Rivas-Davila

Low-Loss Gate Driving Techniques of the Cascode GaN/SiC Power Device at High Frequencies

Conference

COMPEL

J. Xu, L. Gu and J. Rivas-Davila

A Hybrid Cockcroft–Walton/Dickson Multiplier for High Voltage Generation

Journal

IEEE TPELS

S. Park, J. Yang and J. Rivas-Davila

Cascode GaN/SiC Power Device for MHz Switching

Conference

APEC

J. Xu, L. Gu, Z. Ye, S. Kargarrazi and J. Rivas-Davila

Empirical Circuit Model for Output Capacitance Losses in Silicon Carbide Power Devices

Conference

APEC

Z. Tong, S. Park and J. Rivas-Davila

On the Techniques to Utilize SiC Power Devices in High- and Very High-Frequency Power Converters

Journal

IEEE TPELS

Z. Tong, L. Gu, Z. Ye, K. Surakitbovorn and J. Rivas-Davila,

Output Capacitance Loss Characterization of Silicon Carbide Schottky Diodes

Journal

IEEE JESTPE

Z. Tong, G. Zulauf, J. Xu, J. D. Plummer and J. Rivas-Davila,

Isolated multi-level resonant topologies for wide-range power conversion and impedance matching

Patent

Luke C. Raymond,m Wei Liang and Juan M. Rivas Davila

A Multiresonant Gate Driver for High-Frequency Resonant Converters

Journal

IEEE TIE

L. Gu, Z. Tong, W. Liang and J. Rivas-Davila

Substrate Bias Effect on E-Mode GaN-on-Si HEMT Coss Losses

Conference

WiPDA

J. Zhuang, G. Zulauf and J. Rivas-Davila

Designing a 40.68 MHz power-combining resonant inverter with eGaN FETs for plasma generation

Conference

ECCE

J. Choi, Y. Ooue, N. Furukawa and J. Rivas

Active Power Device Selection in High- and Very-High-Frequency Power Converters

Journal

IEEE TPELS

G. Zulauf, Z. Tong, J. D. Plummer and J. M. Rivas-Davila,

Coss Measurements for Superjunction MOSFETs: Limitations and Opportunities

Journal

IEEE TED

G. D. Zulauf, J. Roig-Guitart, J. D. Plummer and J. M. Rivas-Davila,

Design of a GaN-Based Wireless Power Transfer System at 13.56 MHz to Replace Conventional Wired Connection in a Vehicle

Conference

IPEC

K. Surakitbovorn and J. Rivas-Davila

High-Frequency Resonant Converter with Synchronous Rectification for High Conversion Ratio and Variable Load Operation

Conference

IPEC

L. Gu, K. Surakitbovorn and J. Rivas-Davila

An Integrated RF Power Delivery and Plasma Micro-Thruster System for Nano-Satellites

Journal

Frontiers in Physics

W. Liang, C. Charles, L. Raymond, A. Stuchbery, K. Surakitbovorn, L. Gu, R. Boswell, J. Rivas-Davila

High-Frequency Bidirectional Resonant Converter for High Conversion Ratio and Variable Load Operation

Conference

COMPEL

L. Gu, K. Surakitbovorn, G. Zulauf, S. Chakraborty and J. Rivas-Davila

Effect of Class 2 Ceramic Capacitance Variations on Switched Capacitor and Resonant Switched Capacitor Converters

Conference

COMPEL

J. Xu, L. Gu, E. Hernandez and J. Rivas-Davila

Design of a GaN-Based, Inductor-less, Wireless Power Transfer System at 40.68 MHz

Conference

COMPEL

K. Surakitbovorn and J. Rivas-Davila

Design of a 13.56 MHz dc-to-dc resonant converter using an impedance compression network to mitigate misalignments in a wireless power transfer system

Conference

COMPEL

J. Choi, J. Xu, R. Makhoul and J. Rivas

Considerations for Active Power Device Selection in High- and Very-High-Frequency Power Converters

Conference

COMPEL

G. Zulauf, Z. Tong and J. Rivas-Davila

Estimating the Reliability of Series-Connected Schottky Diodes for High-Frequency Rectification

Conference

COMPEL

S. Park, G. Zulauf and J. Rivas-Davila

A Wide Input Range Isolated Stacked Resonant Switched-Capacitor dc-dc Converter for High Conversion Ratios

Conference

COMPEL

Y. Li, L. Gu, A. Hariya, Y. Ishizuka, J. Rivas-Davila and S. Sanders

A Study on Off-State Losses in Silicon-Carbide Schottky Diodes

Conference

COMPEL

Z. Tong, G. Zulauf and J. Rivas-Davila

Implementing an Impedance Compression Network to Compensate for Misalignments in a Wireless Power Transfer System

Journal

IEEE TPELS

. Choi, J. Xu, R. Makhoul and J. M. R. Davila

Coss losses in silicon superjunction MOSFETs across constructions and generations

Conference

ISPSD

G. Zulauf and J. Rivas-Davila

60 V-to-35 kV input-parallel output-series DC-DC converter using multi-level class-DE rectifiers

Conference

APEC

S. Park, L. Gu and J. Rivas-Davila

Duty Cycle and Frequency Modulations in Class-E DC–DC Converters for a Wide Range of Input and Output Voltages

Journal

IEEE TPELS

S. Park and J. Rivas-Davila

COSS Losses in 600 V GaN Power Semiconductors in Soft-Switched, High- and Very-High-Frequency Power Converters

Journal

IEEE TPELS

G. Zulauf, S. Park, W. Liang, K. N. Surakitbovorn and J. Rivas-Davila

A Wide-Input-Range High-Efficiency Step-Down Power Factor Correction Converter Using a Variable Frequency Multiplier Technique,

Journal

IEEE TPELS

L. Gu, W. Liang, M. Praglin, S. Chakraborty and J. Rivas-Davila,

Output capacitance losses in 600 V GaN power semiconductors with large voltage swings at high- and very-high-frequencies

Conference

APEC

G. Zulauf, W. Liang, K. Surakitbovorn and J. Rivas-Davila

Design of very-high-frequency synchronous resonant DC-DC converter for variable load operation

Conference

ECCE

L. Gu, W. Liang and J. R. Davila

A unified model for high-power, air-core toroidal PCB inductors

Conference

COMPEL

G. Zulauf, W. Liang and J. Rivas-Davila,

Implementing an impedance compression network to correct misalignment in a wireless power transfer system

Conference

COMPEL

J. Choi and J. Rivas

Isolated resonant DC-DC converters with a loosely coupled transformer

Conference

COMPEL

S. Park and J. Rivas-Davila,

A multi-resonant gate driver for Very-High-Frequency (VHF) resonant converters

Conference

COMPEL

L. Gu, W. Liang and J. Rivas-Davila

A compact RF power inverter with reduced EMI for a CubeSat electrothermal micro-thruster

Conference

COMPEL

W. Liang, X. Cui, L. Raymond, L. Gu, C. Charles, R. Boswell, J. Rivas-Davila

A portable electrostatic precipitator to reduce respiratory death in rural environments

Conference

COMPEL

S. Talukder, S. Park and J. Rivas-Davila

The “Smart Dim Fuse”: A new approach to load control as a distributed energy resource

Conference

COMPEL

A. Goldin, R. Rajagopal, C. Rivetta and J. M. Rivas Davila

Evaluation of GaN transistor losses at MHz frequencies in soft switching converters

Conference

COMPEL

K. Surakitbovorn and J. R. Davila

High-Frequency, High-Power Resonant Inverter With eGaN FET for Wireless Power Transfer

Journal

Letters

TPELS

J. Choi, D. Tsukiyama, Y. Tsuruda and J. M. R. Davila

Power loss of GaN transistor reverse diodes in a high frequency high voltage resonant rectifier

Conference

APEC

S. Park and J. Rivas-Davila

Structurally supportive RF power inverter for a CubeSat electrothermal plasma micro-thruster with PCB inductors

Conference

APEC

W. Liang, L. Raymond, J. R. Davila, C. Charles and R. Boswell

Universal line input power factor preregulator using VFX technique

Conference

APEC

L. Gu, W. Liang, M. Praglin, S. Chakraborty and J. Rivas-Davila

Low-Mass RF Power Inverter for CubeSat Applications Using 3-D Printed Inductors

Journal

JESTPE

W. Liang, L. Raymond, M. Praglin, D. Biggs, F. Righetti, M. Capelli, B. Holman, J. Rivas Davila

Design of a Class-DE Rectifier with Shunt Inductance and Nonlinear Capacitance for High-Voltage Conversion

Journal

IEEE TPELS

S. Park and J. Rivas-Davila

Vacuum Testing of a Miniaturized Switch Mode Amplifier Powering an Electrothermal Plasma Micro-Thruster

Journal

Frontiers in Physics

C. charles, W. Liang, L. Raymond, J. Rivas-Davila, R. Boswell

Inductance cancellation in RF resonant power converters

Conference

ECCE

M. Praglin, L. Raymond and J. R. Davila,

Comparison of SiC and eGaN devices in a 6.78 MHz 2.2 kW resonant inverter for wireless power transfer

Conference

ECCE

J. Choi, D. Tsukiyama and J. Rivas

A design methodology for class-D resonant rectifier with parallel LC tank

Conference

COMPEL

S. Park and J. Rivas-Davila

Resonant bi-polar DC pulse power supply for electroporation applications

Conference

COMPEL

L. Raymond, W. Liang, K. Surakitbovorn and J. Rivas Davila

Evaluation of a 900 V SiC MOSFET in a 13.56 MHz 2 kW resonant inverter for wireless power transfer

Conference

COMPEL

J. Choi, D. Tsukiyama and J. Rivas

Low mass RF power inverter for cubesat plasma thruster using 3D printed inductors

Conference

COMPEL

W. Liang, L. Raymond, M. Praglin, D. Biggs, F. Righetti, M. Capelli, B. Holman and J. Rivas Davila

27.12MHz GaN resonant power converter with PCB embedded resonant air core inductors and capacitors

Conference

ECCE

W. Liang, L. Raymond, L. Gu and J. Rivas

27.12 MHz isolated high voltage gain multi-level resonant DC-DC converter

Conference

ECCE

L. Raymond, W. Liang, K. Surakitbovorn and J. Rivas Davila

27.12MHz GaN Bi-directional resonant power converter

Conference

COMPEL

L. Gu, W. Liang, L. C. Raymond and J. Rivas-Davila

13.56 MHz high voltage multi-level resonant DC-DC converter

Conference

COMPEL

L. Raymond, W. Liang, L. Gu and J. Rivas Davila

13.56 MHz 1.3 kW resonant converter with GaN FET for wireless power transfer

Conference

WPTC

Jungwon Choi, D. Tsukiyama, Y. Tsuruda and J. Rivas

13.56 MHz High Density DC–DC Converter With PCB Inductors

Journal

IEEE TPELS

W. Liang, J. Glaser and J. Rivas

3-D-Printed Air-Core Inductors for High-Frequency Power Converters

Journal

IEEE TPELS

W. Liang, L. Raymond and J. Rivas

A High-Frequency Resonant Converter Based on the Class Phi2 Inverter for Wireless Power Transfer

Conference

VTC

J. Choi, W. Liang, L. Raymond and J. Rivas

3D printed air core inductors for high frequency power converters

Conference

ECCE

W. Liang, L. Raymond and J. Rivas

Performance evaluation of diodes in 27.12 MHz Class-D resonant rectifiers under high voltage and high slew rate conditions

Conference

COMPEL

L. C. Raymond, W. Liang and J. M. Rivas

27.12 MHz large voltage gain resonant converter with low voltage stress

Conference

ECCE

L. Raymond, W. Liang, J. Choi and J. Rivas

13.56 MHz high density dc-dc converter with PCB inductors

Conference

APEC

W. Liang, J. Glaser and J. Rivas