In 1973 Craig Wilsen was born in Stellenbosch, South Africa. He received the B.Ing. and M.Ing. degrees in Electrical and Electronic Engineering from the University of Stellenbosch in 1994 and 1996. He next enrolled in the University of Michigan, Ann Arbor, and completed his Ph.D. degree in its Department of Nuclear Engineering and Radiological Sciences in 2001. His advisor was Professor Y. Y. Lau. He joined Northrop Grumman Electronic Systems afterwards, having served as a summer intern in 2000 at Litton Electron Devices Division, San Carlos, CA.

Craig's doctoral thesis presents the first general theory of klystron intermodulation. He develops a numerical code with unprecedented spectral resolution and accuracy. This work finds widespread application in radar, television broadcasting, and long-distance communication, including the Deep Space Network of NASA / Jet Propulsion Laboratory. Also critically examined is the change in the resonant frequency and bandwidth of a resonant cavity under various conditions of an intense electron beam.

This work was done in collaboration with the Air Force Research Laboratory (Kirtland AFB), University of Wisconsin (Madison), Science Applications International Corporation, University of Maryland (College Park), and Northrop Grumman / Litton Electron Devices. The thesis was supported by the Air Force Office of Scientific Research.

Craig Wilsen can be reached at Northrop Grumman Electron Devices, 960 Industrial Road, San Carlos, CA 94070; Phone: +1 650 591-8411; E-mail: cwilsen@ieee.org