197documents trouvés
Apport des ondes hyperfréquences -HF- pour des analyses biologiques non invasives et sans contact
K.GRENIER, D.DUBUC
MH2F
Manifestation avec acte : 6èmes Journées Cancéropôle Grand Sud Ouest et Réunions Satellites, Toulouse (France), 19-21 Octobre 2010, 1p. (Résumé) , N° 10859
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123801Apport des ondes hyperfréquences -HF- pour des analyses biologiques non invasives et sans contact
K.GRENIER, D.DUBUC
MH2F
Revue Scientifique : Bulletin du Cancer, Vol.97, N°Suppl n° 4, pp.76-76, Octobre 2010 (Résumé) , N° 10859
Diffusable
123802Microfluidic-based tunable RF true-time delay line
D.DUBUC, K.GRENIER
MH2F
Manifestation avec acte : European Microwave Week 2010 (EuMC 2010), Paris (France), 26 Septembre - 1 octobre 2010, pp.1222-1224 , N° 10514
Diffusable
123360Les ondes hyperfréquences comme outil d'analyse biologique
K.GRENIER, D.DUBUC, T.CHEN, MC.BLATCHE
2I, MH2F
Manifestation sans acte : Séminaire "Diagnostic et thérapie du cancer de la peau", Toulouse (France), 9 Juillet 2010, 1p. , N° 10861
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123806Apport des ondes hyperfréquences -HF- pour des analyses biologiques non invasives et sans contact
K.GRENIER, D.DUBUC
MH2F
Manifestation avec acte : Les Nanotechnologies en cancérologie: projets applications cliniques et enjeux au sein du Cancéropôle Grand Sud-Ouest, Toulouse (France), 1er Juillet 2010, 1p. (Résumé) , N° 10859
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123833Resonant based microwave biosensor for biological cells discrimination
K.GRENIER, D.DUBUC, P-EPOLENI, M.KUMEMURA, H.TOSHIYOSHI, T.FUJII, H.FUJITA
MINC, University of Tokyo, LIMMS, IIS, CNRS-IIS
Manifestation avec acte : IEEE Radio and Wireless Symposium (RWS 2010), Nouvelle Orleans (USA), 11-13 Janvier 2010, 4p. , N° 10010
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121639RF-MEMS based tuner for microwave and millimeterwave applications
D.DUBUC, K.GRENIER
MH2F
Ouvrage (contribution) : Advanced Microwave and Millimeter Wave Technologies, N°ISBN 978-953-307-031-5, 2010, Chapter 15, pp.303-324 , N° 09745
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123798Efficient design methodology of RF-MEMS based tuner
D.DUBUC, C.BORDAS, K.GRENIER
MINC
Manifestation avec acte : European Microwave Week 2008 (EuMN 2008), Amsterdam (Pays Bas), 27-31 Octobre 2008, pp.398-401 , N° 08415
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Abstract
This paper describes a design methodology specifically developed for RF-MEMS based tuner, which translates into optimal performances in terms of both impedance coverage of the Smith Chart and ïMAXú value. The design methodology is moreover associated with an RF-MEMS technology developed for medium power (in the watt range) applications and exhibiting a design robustness regarding the capacitive RF-MEMS contact quality. A tuner has been designed thanks to this efficient procedure, fabricated and measured. The circuit exhibits excellent measured RF-performances: a wide impedance coverage is reached from the first test with a value of [MAX] of 0.82 at 14GHz.
High-Q microwave resonator based on millions of nanotube cantilevers
M.DRAGOMAN, D.DRAGOMAN, D.NECULOIU, A.CISMARU, K.GRENIER, S.PACCHINI, R.PLANA
IMT, MINC
Manifestation avec acte : European Microwave Week 2008 (EuMN 2008), Amsterdam (Pays Bas), 27-31 Octobre 2008, pp.116-118 , N° 08461
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Abstract
When microwave signal frequencies are tuned close to the mechanical resonant frequency of an array of metallic cantilevered carbon nanotubes, the array sandwiched between two coplanar waveguide lines shows a notch in the transmission coefficient of the microwave signal due to a metal-lossy dielectric transition of the carbon nanotube array at the mechanical resonant frequency of the cantilever. As a result, the nanotube acts like a resonator. We have demonstrated that the quality factor of such an array of millions of nanotube cantilevers displays a quality factor of 800 at room temperature at the fundamental resonance frequency of 1.4 GHz.
Multiphysic modeling and design of carbon nanotubes based variable capacitors for microwave applications
T.RICART, S.PACCHINI, D.DUBUC, K.GRENIER
MINC
Manifestation avec acte : European Microwave Week 2008 (EuMN 2008), Amsterdam (Pays Bas), 27-31 Octobre 2008, pp.1189-1192 , N° 08408
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Abstract
This paper describes the multiphysic methodology developed to design carbon nanotubes (CNT) based variable capacitor (varactor). Instead of using classical RFMEMS design methodologies; we take into account the real shape of the CNT, its nanoscale dimensions and its real capacitance to ground. A capacitance-based numerical algorithm has then been developed in order to predict the pull-in voltage and the RF-capacitance of the CNT-based varactor. This software, which has been validated by measurements on various devices, has been used to design varactor device for which 20V of actuation voltage has been predicted. We finally extend the numerical modeling to describe the electromagnetical behavior of the devices. The RF performances has also been efficiently predicted and the varactor (in parallel configuration) exhibits predicted losses of 0.3dB at 5GHz and quality factor of 22 at 5 GHz, which is relevant for high quality reconfigurable circuits requirements where as the expected sub-microsecond switching time range opens the door to real time tunability.