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Presenter: Dr. Christophe Fumeaux, University of Adelaide, Australia
Supervisor:

Date: Thu, July 16, 2015
Time: 14:00:00 - 16:00:00
Place: ECS 660

ABSTRACT

ABSTRACT:

Dielectric Resonator Antennas (DRAs) have been proposed in the 1980's as alternatives to conventional low-gain printed-circuit antennas. They are typically composed of a low-loss dielectric block mounted on a ground plane. Their operation exploits the high "radiation losses" of open dielectric resonators operating in their low-order modes. DRAs are characterized by a small size, wide bandwidth, simple feeding and design versatility. Their most decisive advantage however may be their high radiation efficiency when realised with low-loss dielectric materials. This property is most relevant in the millimetre-wave frequency range, where conductor losses become significant in conventional printed antennas. The presentation will firstly review some of the DRA-related activities at the University of Adelaide, with examples of wideband geometries, advanced feeding methods, multi-mode multi-function designs and high-efficiency millimetre-wave devices. A second part of the talk will be dedicated to the extension of the DRA principle towards THz and optical frequencies. In particular, the design and manufacture of a reflectarray of dielectric resonator nano-antennas operating at visible frequencies will be presented, with experimental validation as deflecting meta-surface for 633 nm wavelength light.

Biography:

Christophe Fumeaux received the Diploma and Ph.D. degrees in physics from the ETH Zurich, Switzerland, in 1992 and 1997, respectively. From 1998 to 2000, he was a Postdoctoral Researcher with the School of Optics, University of Central Florida, Orlando. In 2000, he joined the Swiss Federal Office of Metrology, Bern, Switzerland, as a Scientific Staff Member. From 2001 to 2008, he was a Research Associate and Group Leader with the Laboratory for Electromagnetic Fields and Microwave Electronics, at ETH Zurich, Switzerland. Since 2008, he has been with The University of Adelaide, where he is currently a Professor with the School of Electrical and Electronic Engineering. Since 2011, he is a Future Fellow of the Australian Research Council. His current main research interests concern computational electromagnetics, antenna engineering, THz technology and the application of RF design principles to optical micro/nano-structures.

Prof. Fumeaux has served as an Associate Editor for the IEEE Transactions on Microwave Theory and Techniques from 2010 to 2013. He serves currently as Senior Associate Editor for the IEEE Transactions on Antennas and Propagation. He was the recipient of the ETH Silver Medal of Excellence for his doctoral dissertation. He was the recipient/corecipient of best journal paper awards, including the 2004 ACES Journal and 2014 IEEE Sensors Journal, as well as best conference paper awards at the 2012 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC 2012) and the 17th Colloque International sur la Compatibilité Electromagnétique (CEM 2014).

For further information, contact: Jens Bornemann (250-721-8666, jbornema@ece.uvic.ca)