N.C. Luhmann, Jr.

N.C. Luhmann, Jr.



  • B.S. University of California, Berkeley, June 1966
  • Ph.D. University of Maryland, College Park, October 1972

Professional Experience

  • UC Davis Distinguished Professor, Applied Science, Electrical and Computer Engineering, July 1993 - Present
  • UC Davis Chair, Department of Applied Science, July 1993-June 1998
  • UCLA Professor, July 1981 - June 1993 Electrical Engineering Dept.
  • UCLA Associate Professor, July 1978 - June 1981 Electrical Engineering Dept.
  • UCLA Assistant Professor, 1973 - June 1978 Electrical Engineering Dept.


Electrical and Computer Engineering Graduate Group
Applied Science Graduate Group
Center for Advanced Laboratory Fusion Science and Engineering (CALFUSE)

Research Interests

Millimeter Wave Imaging, Vacuum Microelectronics, Phased Array Antennas, Microwave Tube Design, High Power Microwave Sources, Free Electron Lasers, Plasma Physics, Wave-Plasma Interactions, Ultrashort Pulse Electronics, High Power Millimeter Wave Sources, Millimeter Wave Quasi-Optical Grid Arrays, Laser Diagnostics, RF Accelerators, Advanced Light Sources, , Gyrotrons, MEMS , Cancer Diagnostics and Treatment.

Research Activities

One of the focuses of the research concerns the development of new imaging and visualization techniques for the study of small amplitude microturbulence in magnetic fusion plasmas which is of critical importance to a basic physics understanding as well as the eventual realization of magnetic fusion energy through its relationship to the problem of anomalous transport in magnetized plasmas. Specifically, we are developing a novel 3-D millimeter wave electron cyclotron emission and radar reflectometric imaging diagnostic for simultaneous measurement of turbulent and coherent fluctuations and profiles of electron temperature and density in toroidal magnetic confinement devices.

Another research emphasis concerns the development of vacuum electron beam based microwave, millimeter wave, and submillimeter wave coherent source technology. Examples include a wideband 140 kW, 94 GHz gyro-TWT intended for next generation imaging radar and a 50 kW, 94 GHz sheet beam klystron. Currently, the focus is on the development of a 50 W, ultra wideband 220 GHz sheet beam TWT for high data rate communications.

Selected Publications

Chang, C.C., Liang, C., and Luhmann, N.C., Jr., Phase Antenna Array Based on Nonlinear Delay Line Technology, Chapter in Novel Technologies for Microwave and Millimeter Wave Applications (Edited by: Jean-Fu Kiang: Published by the Kluwer Academic Publishers), September 2003.

Modern Microwave and Millimeter-Wave Power Electronics, (Edited by Robert J. Barker, John H. Booske, Neville C. Luhmann, Jr. and Gregory S. Nusinovich), IEEE Press, ISBN-0-471-68372-8 2005.

Luhmann, N.C., Jr., Bindslev, H. Park, H., Sanchez, J., Taylor, G., Yu, C.X., Chapter 3 Microwave Diagnostics, (Invited) Special Issue of Fusion Science and Technology on MFE Diagnostics, 53, No. 2, April 2008, pg. 335-430, ISSN:1536:1055.

Zuowei Shen, Lu Yang, N. C. Luhmann, Jr., et al.., "Advanced Microwave/ Millimeter-Wave Imaging Technology," Journal of Plasma and Fusion Research (Invited Paper), 2, S1019, 2007.

Zuowei Shen, and N.C. Luhmann, Jr. Chapter 15 Millimeter Wave Imaging, a chapter to be published in Advanced Millimeter-wave Technologies - Antennas, Packaging, and Circuits, (Edited by Dr. Duixian Liu), John Wiley and Sons, 2008.