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Employer: CNRS / DGA Place: Laboratoire Charles Coulomb (L2C), UMR-CNRS 5221 Duration: 16 mois, starting immediately Description du projet: The degradation of vision through an obscured atmosphere (dust or snow) is a huge problem for both civilian and military aeronautics. During take-off and landing, the clouds of dust or snow that are formed by an helicopter can induce very serious accidents. The possibility of developping a device allowing vision through these medias is therefore a technological challenge with important issues. One of the main problems lies in the opacity of these media in the usual spectral regions. The TeraHertz spectrum opens up new opportunities thanks to a certain number of transparency windows. Specifically, FET transistors allow the detection of terahertz waves as demonstrated by W. Knapp’s group in L2C, Montpellier. However, the realization of an efficient device requires the use of an array of such transistors, coupled to an array of antennas, allowing to collect the incident electromagnetic field and to channel the induced current towards the detection circuit. The point of this project is to develop a computer code allowing the modeling and the optimisation of an array of antennas feeding the array of transistors. The project is part of contract with DGA, Sagem-Défense, LETI, ONERA and L2C. The project will be carried out in close connection with LETI and ONERA. Pre-requisites: Numerical methods for electromagnetism, optimisation, Antennas, COMSOL contact: didier.felbacq@univ-montp2.fr

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