KHAI D. T. NGO
Adjunct Professor

 

Education:

PhD, EE, California Institute of Technology, 1984
MS, EE, California Institute of Technology, 1980
BSEE, California State Polytechnic University, 1979

Contact Information:

Email: kdtn@vt.edu
Phone: 540-951-1175
Office: 671 Whittmore Hall, Virginia Tech, Blacksburg, Virginia

Program Affiliation:

Area:  Electronics, Electromagnetics & Energy Systems
Lab:   Power Management Group

Fields of Interest:

• Magnetic materials and components
• Power electronic circuits and control
• Power semiconductor devices and integrated circuits
• Power quality
• RF power electronics
• Energy harvesting

Employment:

2002 - Professor, Electrical & Computer Engineering, University of Florida
1992 - Associate Professor, Electrical & Computer Engineering, University of Florida
1988 - Assistant Professor, Electrical & Computer Engineering, University of Florida

Refereed Journals in the Last 3 Years:

2005
Khai D. T. Ngo, Santanu K. Mishra, and Soniya Thekkevalappil, “Pulsewidth Modulators with Carriers Derived from Converter Waveforms,” IEE Journal for Electronics Letters, Volume 41, Issue 3, pp. 152-154, Feb. 2005.

Paiboon Nakmahachalasint, Khai D. T. Ngo, and Loc Vu-Quoc, “Thermal Behavior of a Dynamic Domain-Wall-Motion Model for Hysteresis in Power Ferrites,” IEEE Transactions on Magnetics, Volume 41, Issue 1, pp. 140-143, Jan. 2005.

2004
L. Vu-Quoc, Y. Zhai, and K. Ngo, “Efficient simulation of coupled circuit-field problems: generalized Falk method,” IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, Volume 23, Issue 8, Aug. 2004, pp. 1209 - 1219.

Paiboon Nakmahachalasint and Khai D. T. Ngo, “A Behavioral Model for Frequency- Dependent Hysteresis in Power Ferrites,” IEEE Transactions on Magnetics, Volume 40, Issue 4, July 2004, pp. 1784 - 1790.

Contracts and Grants:

• NASA, "Power for Wireless Hydrogen Sensor Network"
• National Science Foundation, "Monolithic Magnetics - Physics Based Modeling & Applications"
• National Science Foundation, "Integrated DC-DC Converter with Substrate-Molded Filter"
• Virginia Polytechnic, "Active Filter for Ghz Microprocessors"

Honors and Awards:

1989-1994 - National Science Foundation Presidential Young Investigator
Who's Who in the South and Southwest
Who's Who in the East
Who's Who Among Young American Professionals

Patents:

• Docket #5853-647, UF Disclosure #12001, "Integrated Power Passives," with Huikai Xie , 2005
• Patent Application #500060026A, UF Disclosure # 11824, " Fabrication of a Micro-Electromechanical System Device form a Complimentary Metal Oxide Semiconductor," with H. Xie, 2005
• 6,954,025, "Resonant Energy MEMS Array Processor," with T. Nishida,  L. Cattafesta, and M. Sheplak, Oct 2005
• 5,134,770, "Method of Fabricating a High-Frequency Transformer," with Alexander J. Yerman, Aug 1992
• 5,084,958, "Method of Making Conductive Film Magnetic Components," with Alexander J. Yerman, Feb 1992
• 5,062,197, "Dual-Permeability Core Structure for Use in High-Frequency Magnetic Components", with Richard J. Charles, Nov 1991
• 5,017,902, "Conduciver film magnetic components," with Alexander J. Yerman, May 1991
• 4,959,630, "High-Frequency Transformer," with Alexander J. Yerman, Sept 1990
• 4,965,709, "Switching Converter with Pseudo-Resonant DC Link," Sep 1990 
• 4,949,217, "Multilayer Capacitor Suitable for Substrate Integration and Multimegahertz Filtering," Aug 1990
• 4,943,793, "Dual-Permeability Core Structure for Use in High-Frequency Magnetic Components," with Richard J. Charles, July 1990
• 4,912,622, "Gate Driver for a Full-Bridge Lossless Switching Device", with Robert L. Steigerwald, John P. Walden, Bantval J. Baliga, Mar 1990
• 4,903,189, "Low Noise, High Frequency Synchronous Rectifier," with Charles S. Korman and Hseuh-Rong Chang, Feb 1990
• 4,894,763, "AC-AC Converter Using Switches in a DC Link," Jan 1990
• 4,864,479, "Full-bridge lossless switching converter," with Robert L. Steigerwald, Sept 1989.
• 4,709,316, "Single-Ended DC-to-DC Converter with Lossless Switching," with William A. Peterson, Nov 1987