A l’occasion d’une visite à Limoges, le Dr Hjalti Sigmarsson, de l’Université d’Oklahoma (Norman, USA), présentera un séminaire le Mercredi 16 Mars prochain à 10h30 en salle de conférences XLIM. Sa présentation s’intitule « Additive Manufacturing for RF & Microwave Applications ».

Note pour les doctorants : pensez à vous inscrire sur la liste d’appel lors du séminaire afin de faire valider votre participation auprès de l’école doctorale ED521 !

Abstract. In the past two decades, a series of new 3D rapid prototyping techniques have emerged enabling the creation of a wide range of structures that would not have been deemed practical previously. This development has opened a new field of research focused on designing comp act, high performance RF and microwave components regardless of build complexity. Previously, the available structures were quite commonly limited to planar structures or 2.5D, using techniques such as printed circuit board (PCB), low temperature co-fired ceramics (LTCC), and silicon micromachining. The new 3D techniques include stereolithography, selective laser sintering, and fused deposition modeling. These methods can rapidly produce truly 3D structures in a variety of materials. This talk will be focused on a historical review of components and structures generated using rapid prototyping for high-frequency, electromagnetic applications. This will be followed by a discussion of ongoing research at the University of Oklahoma’s Advanced Radar Research Center and an envisioned future direction of some these techniques.

Dr. Hjalti Sigmarsson received his B.S. degree from the University of Iceland, Reykjavik, Iceland in 2003, and the M.S. and Ph.D. degrees in electrical and computer engineering from Purdue University, West Lafayette, in 2005 and 2010, respectively. He is currently an assistant professor with the School of Electrical and Computer Engineering at the University of Oklahoma, Norman, OK, where he teaches electromagnetic field theory, circuit theory, and advanced filter design and synthesis. He is a member of the Advanced Radar Research Center (ARRC). His current research focuses on reconfigurable RF and microwave hardware for agile communications, measurement, and radar systems. Furthermore, his research interests include spectral management schemes for cognitive radio architectures, rapid prototyping of novel 3D electromagnetic structures, and advanced packaging utilizing heterogeneous integration techniques. Dr. Sigmarsson is a member of the Institute of Electrical and Electronics Engineers (IEEE) Microwave Theory & Techniques Society (MTT-S), the IEEE Antennas & Propagation Society (AP-S) and the International Microelectronics and Packaging Society (IMAPS). In 2008, his paper was awarded the best paper of the IMAPS 2008 41st International Symposium on Microelectronics. He was a member of a team that received recognition for outstanding technical contribution to Phase I of the DARPA Analog Spectral Processors (ASP) program in 2008. In 2015, he was awarded the Air Force Office of Scientific Research (AFOSR) Young Investigator Research Program (YIP) award to pursue his research on reconfigurable high-frequency electronics using phase-change materials.

Venez nombreux !

Contact du séminaire : Nicolas Delhote (nicolas.delhote@unilim.fr) / seminaires@xlim.fr