59documents trouvés
Miniaturization of quadrifilar helix antenna for VHF band applications
A.TAKACS, N.J.G.FONSECA, H.AUBERT, X.DOLLAT
MINC, CNES, 2I
Manifestation avec acte : Loughborough Antennas & Propagation Conference (LAPC 2009), Loughborough (UK), 16-17 Novembre 2009, 4p. , N° 09921
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122553Electromagnetic Analys of the Experimental Setup used to Investigate the Ratchet Effect in Two-Dimensional Electron System under Microwave Radiation
A.TAKACS, D.MEDHAT MOHAMED ABDEL MAKSOUD, H.AUBERT, J.C.PORTAL
MINC, GHMFL
Rapport LAAS N°09859, Octobre 2009
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120339Design and manufacturing of tunable badpass filter for millimeter wave applications
A.TAKACS, P.F.CALMON, A.RUMEAU, H.AUBERT, P.PONS, A.MULLER, D.NECULOIU, R.PLANA
TEAM, 2I, IMT, MINC
Manifestation avec acte : Workshop on Micromachining, Micromechanics and Microsystems (MME 2009), Toulouse (France), 20-22 Septembre 2009, 4p. , N° 09922
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122555Estimation of low frequency coverage inside car for passive access system entry
A.TAKACS, M.HUARD, S.KESSLER, G.A.CHAKAM, E.LARDJANE
Technocentre Renault, Continental Auto., MINC
Revue Scientifique : Electronics Letters, Vol.45, N°2, pp.596-597, Juin 2009 , N° 09335
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118169Tunable bandstop and bandpass MEMS filters for millimeter wave applications
A.TAKACS, D.NECULOIU, D.VASILACHE, A.MULLER, P.PONS, L.BARY, P.F.CALMON, H.AUBERT, R.PLANA
IMT, MINC, 2I, TEAM
Manifestation avec acte : European Microwave Week 2008 (EuMN 2008), Amsterdam (Pays Bas), 27-31 Octobre 2008, pp.591-594 , N° 08459
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Abstract
This paper addresses the design and modeling of millimeter wave tunable filters using CoPlanar Waveguide (CPW) quarter wavelength stubs and MEMS (Micro-Electro- Mechanical-Systems) switches. In order to design bandstop and bandpass tunable MEMS filters an accurate design methodology based on the transmission line theory is presented. The tunable behavior is achieved using original MEMS switches: Two Cantilever Shunt Switch (TCSS). The overall structures, including TCSS, have been manufactured using dielectric membrane, in order to minimize the insertion losses. The obtained simulation and experimental results confirm the accuracy of the proposed design methodology and indicates very good performances in millimeter wave band.
New topologies of tunable bandstop MEMS filters for millimeter wave applications
A.TAKACS, D.NECULOIU, D.VASILACHE, A.MULLER, P.PONS, L.BARY, P.F.CALMON, R.PLANA, H.AUBERT
IMT, MINC, 2I, TEAM
Manifestation avec acte : 37th European Microwave Conference, Munich (Allemagne), 8-12 Octobre 2007, pp.126-129 , N° 07609
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Abstract
This paper addresses the design and the realization of tunable bandstop filters using MEMS (Micro-Electro-Mechanical-Systems) technology for millimeter wave applications. In order to design bandstop tunable MEMS filters, three new topologies are presented. The presented measurement and simulation results validate the proposed topologies. The tunable behavior is achieved using MEMS switches. These switches, based on original topology of Two Cantilever Shunt Switch (TCSS), have a typical shunt switch behavior and intrinsic low actuation voltage. The overall structures, including TCSS, have been manufactured using dielectric membrane, in order to minimize the insertion losses.
Tunable bandstop MEMS filter for millimetre-wave applications
A.TAKACS, D.NECULOIU, D.VASILACHE, A.MULLER, P.PONS, L.BARY, P.F.CALMON, H.AUBERT, R.PLANA
MINC, 2I, TEAM, IMT
Revue Scientifique : Electronics Letters, Vol.43, N°12, pp.675-677, Juin 2007 , N° 07265
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Abstract
The design and realisation of original millimetre-wave tunable bandstop filters using MEMS (micro-electro-mechanical-systems) technology for millimetre-wave applications is presented. The tunable behaviour is achieved by using MEMS switches. The overall structures, including the MEMS switches, have been manufactured using dielectric membrane in order to minimise the dielectric losses. Experimental validations are reported and validate the proposed topology: the bandstop frequency is shifted by approximately 3.5 GHz in V-band when the switches are actuated.
Nanoelectromechanical switches based on carbon nanotubes for microwave and millimeter waves
M.DRAGOMAN, A.TAKACS, A.MULLER, H.HARTNAGEL, R.PLANA, K.GRENIER, D.DUBUC
IMT, Darmstadt, MINC
Revue Scientifique : Applied Physics Letters, Vol.90, N°11, 113102p., Mars 2007 , N° 07128
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Abstract
In this letter the authors analyze two configurations of nanoelectromechanical switches, which are working in the microwave and millimeter wave frequency ranges. Metallic nanotubes vertically or horizontally positioned on a propagating high frequency planar waveguide disable or enable the electromagnetic field propagation, whether they are actuated or not by a dc electric field of a few volts. Although the dimensions of metallic nanotubes are very small in comparison with the planar waveguide dimensions and the operating wavelengths, these switches are very efficient and agile.
Micromachined bandpass filter with improved bandstop response for WLAN 5.2 GHz
A.MULLER, D.NECULOIU, D.VASILACHE, A.TAKACS, A.CISMARU, P.PONS, R.MULLER
IMT, MINC
Manifestation avec acte : 17th Workshop on Micromachining, Micromechanics and Microsystems (MME'2006), Southampton (GB), 3-5 Septembre 2006, 4p. , N° 06848
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108835Compact lumped elements micromachined band-pass filters with discrete switching for 1.8/5.2 GHz applications
D.NECULOIU, A.MULLER, D.VASILACHE, I.PETRINI, C.BUICULESCU, A.TAKACS, R.MULLER, M.DASCALU, F.GIACOMOZZI, L.BARY, R.PLANA
IMT, ITC, 2I, MINC
Manifestation avec acte : 7th International Conference on RF MEMS and RF Microsystems, Orvieto (Italie), 27-30 Juin 2006, 4p. , N° 06852
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