David DUBUC Associate Professor
Projects
Project on Metamaterial in LIMMS (from september 2007 to ... still running ....)
Integration of reconfigurable metamaterial structures for RF-applications
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The
research project aims to take benefit from the broad capabilities of
the microtechnologies in terms of microfabrication, 3D integration and
electromechanical tunability (using MEMS concept) to develop innovative
and reconfigurable metamaterial-based structures at microwave and
millimeterwave frequencies.
The
followed approach considers simultaneously the RF-design, technological
and characterization constraints to set up new kind of microwave
circuits exhibiting enhanced electrical performances, functionalities
(like reconfigurability) and integration level and then contributing to
the development of the future RF Microsystems.
This project is hosted by the Pr. Hiroshi Toshiyoshi and is based on the following strategy :
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| Toshiyoshi lab | Daily life in Clean Room |
Projects on RF-MEMS (from september 2001 to march 2008)
Multi-physic design of RF-MEMS 20GHz optimized RF-MEMS switch |  5W-10GHz RF-MEMS varactor |  60GHz submicrosecond (switching time) RF-MEMS varactor |
Reliability investigations on capacitive RF-MEMS
 Developped test set for RF-MEMS reliability investigations |  Proposed original modeling of the dielectric charging |
Design of RF-MEMS based proof-of-concept demonstrators
 30GHz RF-MEMS based SPDT |  5W-10GHz Low Insertion Losses / High Isolation switch |  1W-20GHz 6-bits Tuner |  60 GHz SPDT |
Project on Carbon Nanotube for RF/Microwave Applications (from January 2005 to ... still running ....)
Multiphysic Modeling of nano-scale electromechanical devices Considered Toplogy |  Results from our modeling methodology |
Design of Carbon-Nanotube based Microwave devices
 Nanotube-based RF Serial Varactor |  Nanotube-based RF Parallel Varactor |
Project toward RF/Microwave Microsystem Integration (from september 2001 to march 2008)
Active circuits SiGe Micromixer operating at 20GHz |
Passive function
 Miniaturization scheme of coupler integrated on silicon |  3D-Broadside Coupler integrated on Silicon |
Objective
 View of passive and active circuits integrated on silicon toward microsystem |