S.T. Sheppard

MACOM (United States) — United States

Physics and Astronomy · Physical Sciences

19h-index3.8kcitations70works1.02yr avg
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Research Topics

GaN-based semiconductor devices and materials(48), Silicon Carbide Semiconductor Technologies(36), Radio Frequency Integrated Circuit Design(24), Semiconductor materials and devices(18), Semiconductor Quantum Structures and Devices(17)

Publications69 total

Thermophysical Property Measurement of GaN-on-AlN Wafers for Next-Generation RF Device Technologies
2024· 1 cited
Modeling and Simulation of Discrete Silicon Carbide Integrated Passive Devices in High-Power RF Amplifiers
2023
Implications of Interfacial Thermal Transport on the Self-Heating of GaN-on-SiC High Electron Mobility Transistors
IEEE Transactions on Electron Devices·2023· 15 cited
Characterization of GaN-on-SiC Wafers using a Multi-Method Laser-Based Pump-Probe Technique
2023· 1 cited
GaN HEMTs Design and Modeling for 5G
2023· 1 cited
Capacitance Engineering of GaN HEMT Technologies with Recessed Field Plate
2022
DC and RF Reliability Assessment of 5G-MMW capable GaN HEMT Process (Invited)
2022 IEEE International Reliability Physics Symposium (IRPS)·2022· 12 cited
Improved X-Band Performance and Reliability of a GaN HEMT With Sunken Source Connected Field Plate Design
IEEE Electron Device Letters·2022· 36 cited
A High Efficiency, Ka-Band, GaN-on-SiC MMIC with Low Compression
2019· 11 cited
95 Percent Efficiency, 10MHz Switching Rate and 30W, Fully Integrated Buck Converters Using E/D-mode GaN HEMTs
2019
Reliability comparison of 28 V–50 V GaN-on-SiC S-band and X-band technologies
Microelectronics Reliability·2018· 13 cited
C-band and X-band class F, F-1 GaN MMIC PA design for envelope tracking systems
2015
Power Amplifier Design Optimized for Envelope Tracking
2014· 6 cited
A Review of GaN on SiC High Electron-Mobility Power Transistors and MMICs
IEEE Transactions on Microwave Theory and Techniques·2012· 963 cited
Commercial GaN Devices For Switching and Low Noise Applications
2011· 20 cited
100 mm GaN-on-SiC RF MMIC technology
2010 IEEE MTT-S International Microwave Symposium·2010· 2 cited
100 mm GaN-on-SiC RF MMIC technology
2010 IEEE MTT-S International Microwave Symposium·2010· 3 cited
AlGaN/GaN-on-SiC HEMT Technology Status
Technical digest -- IEEE Compound Semiconductor Integrated Circuit Symposium·2008· 18 cited
SiC and GaN Wide Bandgap Technology Commercial Status
2008· 7 cited
SiC and GaN Wide Bandgap Device Technology Overview
Proceedings of the IEEE National Radar Conference·2007· 42 cited
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Frequent Co-authors

John W. Palmour(16), W.L. Pribble(13), R.P. Smith(11), J. Milligan(11), Scott T. Allen(11), M. R. Melloch(8), James A. Cooper(8), K. Doverspike(7), Z. Ring(7), W. Wondrak(7), A. Saxler(6), Simon M. Wood(6), G. E. Bulman(6), J. A. Edmond(6), M. Leonard(6), U. Schmid(6), Yifeng Wu(5), Hoyoul Kong(5), H. Dieringer(5), Jim Milligan(5)