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Institute for Pure and Applied Physical Sciences - Professional Researchers
George W. Webb
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Ph.D., Physics
Research Scientist
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Research Areas
Microwave diffraction and characterization of materials
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Our recent research has been concerned with the use of photo-injected solid-state plasmas in semiconductors to manipulate millimeter waves and on new developments in diffractive microwave or millimeter wave antennas. The photo-injected plasma work has led to the development of an optically controlled antenna which can form millimeter waves into beams and electronically steer the beams in space. The work on diffractive antennas has grown out of the discovery of a free parameter, a type of reference phase, in the design of Fresnel zone plate diffractive antennas. Historically, zone plate antennas have been designed with a specific choice for this parameter, which can, however, be chosen to have non-standard values. We are investigating how non-standard values of reference phase improve aspects of antenna performance and add new functionality to antennas.
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Selected Publications
G. W. Webb "New Variable For Fresnel Zone Plate Antennas." Proceedings of Antenna Applications Symposium. Monticello IL, (2003). PDF
G. W. Webb, I. V. Minin, and O. V. Minin, "New Technique to supress sidelobe clutter in perimeter security systems," International Journal of High Speed Electronics and Systems 17, 367-382 (2007).
G. W. Webb, I. Minin, and O. Minin, "Eliminating multipath fading improves wireless signal reception," SPIE Online Magazine http://spie.org/x8701.xml
G. W. Webb "New Variable for Fresnel Zone Plate Antennas." Proceedings of 2003 Antenna Applications Symposium, Monticello, Illinois (2003).
G. W. Webb, S. Angello, W. Vernon, M. S. Sanchez, and S. C. Rose, "Novel Photonically Controlled Antenna for MMW Communications." Proceedings of International Topical Meeting on Microwave Photonics MWP 2000, Oxford, UK 97 (2000).
G. W. Webb, Stephen C. Rose, Mario S. Sanchez, and J. Martin Osterwalder, "Experiments on an Optically Controlled 2-D Scanning Antenna." Proceedings of Antenna Applications Symposium, Monticello IL, (1998).
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