Dielectric resonator antennae: from microwaves to optical frequencies
Event details
| Date | 20.08.2013 |
| Hour | 11:00 |
| Speaker |
Prof. Christophe Fumeaux, University of Adelaide Bio: Christophe Fumeaux received the Dipl. Phys. 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. From 2001 to 2008, he was a Senior Scientist with the Laboratory for Electromagnetic Fields and Microwave Electronics, ETH, Zurich. Since 2008, he has been with The University of Adelaide, where he is currently a full Professor with the School of Electrical and Electronic Engineering. His current main research interest concerns computational electromagnetics, antenna engineering, THz technology and the application of RF design principles to optical micro/nano-structures. He has published more than 180 technical papers in peer-reviewed journals and conferences, in both RF and optical areas. Prof. Fumeaux is a Future Fellow of the Australian Research Council. He is an Associate Editor for the IEEE Transactions on Microwave Theory and Techniques. He was awarded the ETH Medal for his doctoral dissertation, the 2004 Outstanding Paper Award of the Applied Computational Electromagnetics Society (ACES), and the Best Symposium Paper Award at the APEMC 2012. |
| Location |
MXG 110
|
| Category | Conferences - Seminars |
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 optical frequencies. 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.
Practical information
- General public
- Free
Organizer
- Julien Perruisseau-Carrier
Contact
- Julien Perruisseau-Carrier