Booske, John H.

electromagnetic field interactions with materials
microwave and RF processing of materials (e.g., ceramics, semiconductors); see Using microwaves to speed materials processing, UW-Madison College of Engineering Annual Report, 2000.
rapid thermal annealing of silicon and wafer bonding
microwave vacuum electronics (especially linearity and understanding mechanisms of nonlinear distortions)
micromachined terahertz vacuum electronic devices
innovative teaching methods, especially for electromagnetics
computer visualization for teaching electromagnetics

Publications

M. Wirth, A. Singh, J. Scharer, and J. Booske, Third-Order Intermodulation Reduction by Harmonic Injection in a TWT Amplifier, IEEE Trans. Electron Devices 49(6), 1082-1084 (2002).
J.G. W�hlbier, J.H. Booske, I. Dobson, The Multifrequency Spectral Eulerian (MUSE) Model of a Traveling Wave Tube, IEEE Trans. Plasma Science 30(3), 1063-1075 (2002).
J.G. W�hlbier, J.H. Booske, I. Dobson, Generation and growth rates of nonlinear distortions in a traveling wave tube, Physical Review E 66(5), article no. 056504 NOV (2002).
S. Bhattacharjee, C. Marchewka, J. Welter, R. Kowalczyk, C.B. Wilsen, J.H. Booske, Y.Y. Lau, M.W. Keyser, A. Singh, J.E. Scharer, R.M Gilgenbach, M.J. Neumann,Suppression of third-order intermodulation in a klystron by third-order injection, Physical Review Letters 90(9), art. no. 098303, (2003).
K. Thompson, J.H. Booske, Y.B. Gianchandani, and R.F. Cooper, Electromagnetic Annealing for the 100 nm Technology Node , IEEE Elec. Dev. Lett. 23(3), 127-129(2002).
Keith Thompson, Yogesh B. Gianchandani, John Booske, Reid Cooper, Direct Si-Si Bonding by Electromagnetic Induction Heating , J. MicroElectroMechanical Systems 11(4), 285-292(2002).
S.A.Freeman, J.H.Booske, and R.F.Cooper, Modeling and Numerical Simulations of Microwave-Induced Ionic Transport J. Appl. Phys. 83(11), 5761-5772 (1998).
J.H. Booske, R.F. Cooper, and S.A. Freeman, Microwave Enhanced Reaction Kinetics in Ceramics Materials Research Innovations 1(2), 77-84 (1997).
D.M. Hagl, D. Popovic, S.C. Hagness, J.H. Booske, M. Okoniewski,Sensing Volume of Open-Ended Coaxial Probes for Dielectric Characterization of Breast Tissue at Microwave Frequencies IEEE Trans. Microwave Theory and Techniques 51(4), 1194-1206 (2003).
J.H. Booske, M.A. Basten, A.H. Kumbasar, T.M. Antonsen, S.W. Bidwell, Y. Carmel, W.W. Destler, V.L. Granatstein and D.J. Radack Periodic Magnetic Focusing of Sheet Electron Beams Phys. of Plasmas 1(5), 1714-1720 (1994).
A. Choffrut, B. VanVeen, and J.H. Booske, TWT Linearization using LINC architecture IEEE Transactions on Electron Devices 50(5), 1405-1408 (2003).
S. Bhattacharjee, J.H. Booske, C.L. Kory, D.W. van der Weide, W.J. Lee, S. Limbach, M.R. Lopez, R.M. Gilgenbach, A compact folded waveguide traveling wave tube oscillator for the generation of terahertz radiation: simulations and scaled experiments, IEEE Transactions on Microwave Theory and Techniques (to be published, 2003).

Selected Awards, Honors and Societies

Benjamin Smith Reynolds Award for Excellence in Teaching Engineers
UW Chancellor's Distinguished Teaching Award
National Science Foundation Presidential Young Investigator
Fellow of the University of Wisconsin-Madison Teaching Academy
ECE Holdridge Teaching Excellence Award
UW-Madison, Polygon Engineering Student Council ECE Outstanding Instructor (4 times)
UW-Madison IEEE Professor of the Year (2 times)
Senior Member, IEEE
American Physical Society
Institute of Electrical and Electronic Engineers
Materials Research Society
American Society for Engineering Education

Summary

My research interests cover a broad range of problems involving electromagnetic fields and waves. Generally, topics of interest to me are related to some aspect of new sources and/or applications of high frequency (i.e., radio frequency to microwave to x-ray) electromagnetic radiation. Specific examples of recent research problems are outlined below.

New advances in communications, radar, solid state spectroscopy, remote sensing, fusion energy research, and materials processing require the development of tunable, wideband, high-power sources of coherent electromagnetic radiation in the microwave, millimeter, submillimeter, and higher frequency regimes. Solid state sources do not, and will not, satisfy all of the needs of such applications, as many require higher total efficiency and powers in much smaller packages than a solid-state-based device can provide. These needs require high-tech vacuum devices which employ electron beams. Our research in this area enables improved devices with higher power, higher frequency, more compact size, greater efficiency, better linearity, new abilities to linearly amplify multiple signals simultaneously, etc.

An area of particular interest is to understand and suppress nonlinear distortions in vacuum electronic microwave amplifiers such as traveling wave tubes and klystrons. A second, exciting project is an investigation to develop miniature sources of millimeter-wave and THz regime radiation (30 GHz to 3 THz) using microfabricated vacuum electron devices. We are also interested in researching new microwave sources for radar that can see through walls, through "chaff", or are immune to electronic countermeasures such as "spoofing".

My materials-related research interests include the use of microwave and RF heating to process and modify materials. For example, it has been observed that microwave heating of ceramics may result in significantly enhanced sintering and chemical reaction rates compared to samples heated in conventional furnaces. Similar issues arise in microwave or radio-frequency (RF) heating of semiconductor materials. Our research is devoted to understanding why these phenomena occur. This is important to establish optimal methods of microwave and RF materials processing.

Currently, we are investigating the use of microwave and radio frequency radiation for rapid annealing and bonding of semiconductor materials. These processes are very important for manufacturing the next generations of integrated circuit chips, solid state microwave sources, and microelectromechanical systems (MEMS) devices.

In collaboration with Professor Hagness, we are investigating how RF and microwave frequency radiation interact with biological tissues and cells. In one study, we are determining the microwave dielectric properties of human breast tissue. This data will be used to develop improved methods for breast cancer detection and treatment technologies based on microwave imaging. In another study, we are investigating the effects on short pulses of RF frequency radiation on the functioning of cells. The insights of this research will be applied to develop new methods for treatment of cancers and other diseased or damaged tissues.

Files and Links of Interest

Copyright 2007 The Board of Regents of the University of Wisconsin System
Date last modified: 29-Nov-2007
Content by: booske@engr.wisc.edu
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