ECE: Electrical & Computer Engineering
ECE Faculty

Dong S. Ha

Recent News:

IC design for energy harvesting (Wall Street Journal, 2012)

New sensor to stop falls by elders (VT News, 2011)

Energy harvesting for self-powered sensors (2010 Annual Report)

Photograph of Dong S. HaOffice: 470 Whittemore
Mailing Address: 302 Whittemore (0111)
Virginia Tech
Blacksburg, VA 24061
Tel: (540) 231-4942
Fax: (540) 231-3362
vt.edu Email: ha

Google Scholar Profile



Affiliated Research Group
Director: Multifunctional Integrated Circuits and Systems Group (MICS)

Title: Professor

Education:
Ph.D., Electrical and Computer Engineering, University of Iowa, 1986
M.S., Electrical and Computer Engineering, University of Iowa, 1984
B.S., Electrical Engineering, Seoul National University, 1974

Teaching Interests:
Analog IC Design, RF IC Design, Power Management Circuits for Energy Harvesting, Electronic Circuits

Research Interests:
Analog / RF ICs, Circuits, and Systems

  • Energy Harvesting ICs and Circuits
  • Power Management ICs
  • High Temperature RF Circuits, ICs, and Systems

Recognition:
IEEE Fellow


Selected Publications:
  • J.M. Salem and D.S. Ha, “Dual Use of Power Lines for Design-for-Testability (DFT) - A CMOS Receiver Design,” to appear in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 9999.
  • S. Priya, Y. Zhou, A. Chopra, S.-G. Kim, I. Kanno, L. Wu, D.S. Ha, and J. Ryu, “Piezoelectric Energy Harvesting: Materials, Methods, and Circuits,” to appear in Energy Harvesting and Systems, 9999.
  • X.-D. Do, H.-H. Nguyen, S.-K. Han, D.S. Ha, and S.-G. Lee, “A Self-Powered High-Efficiency Rectifier with Automatic Resetting of Transducer Capacitance in Piezoelectric Energy Harvesting Systems,” IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 23, no. 3, pp. 444-453, March 2015.
  • J.H. Hyun, D.S. Ha, D.D. Han, and C.-M. Kyung, “A Solar Energy Harvesting System for a Portable Compact LED Lamp,” to appear in 41st Annual Conference of the IEEE Industrial Electronics Society (IECON 2015), November 2015.
  • B. Cassidy, D.S. Ha and Q. Li, “A Constant ON-Time 3-Level Buck Converter for Low Power Applications,” IEEE Energy Conversion Congress and Exposition (ECCE), September 2015.
  • T. Yeago, J.H. Hyun, D.S. Ha and Q. Li, “A Two-phase Buck Converter with Optimum Phase Selection for Low Power Applications,” IEEE Energy Conversion Congress and Exposition (ECCE), September 2015.
  • L. Wu, D.S. Ha, J. Kuang, X.-D. Do, and S.-G. Lee, “An Active Rectifier with Optimal Flip Timing for the Internal Capacitor for Piezoelectric Vibration Energy Harvesting,” IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), pp. 684-687, August 2015.
  • J. Chong and D.S. Ha, “A 100 Gb/s Transimpedance Amplifier with Diode-Connecting Input-Resistance-Reduction in 32 nm CMOS Technology,” IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), pp. 684-687, August 2015.
  • N. Kong and D.S. Ha, “Low-Power Design of a Self-powered Piezoelectric Energy Harvesting System With Maximum Power Point Tracking,” IEEE Transactions on Power Electronics, Vol. 27, No. 5, pp. 2298-2308, May 2012.
  • S. Wang, V. Chawla, D.S. Ha, and B. Kim, “Low-Voltage Low-Power 1.6 GHz Quadrature Signal Generation through Stacking a Transformer-Based VCO and a Divide-by-two,” IEEE Transactions on Circuits and Systems - I, Vol. 59, No. 12, pp. 2901-2910, December 2012.