Modeling and Characterization of Near Field Coupling Between a Noise Source and a Wire
Martin Humeau1,2,3, Mohamed Ghjiawad Congo1,2, Mohsen Koohestani1,4, David Boudikian3, Richard Perdriau1,4, Marine Stojanovic3, Frédéric Lafon3, Mohamed Ramdani1,4
1Ecole Supérieure d’Électronique de l’Ouest (ESEO), Angers 49107, France; 2Institut National des Sciences Appliquées (INSA), Université de Rennes, Rennes 35708, France; 3Valeo, Ecouflant 49000, Bobigny 93012, Créteil 94000, France; 4Institut d’Electronique et des Technologies du numéRique (IETR), Rennes 35042, France
In this study, an analytical model was developed to predict electromagnetic coupling between a noise source, represented by a single-turn metallic loop, and a harness modeled as a single wire above a ground plane. The analytical approach accounts for the dispersion of the magnetic field across an equivalent coupling surface when calculating mutual inductance using transmission line equations. Measurements and full-wave simulations in Ansys HFSS were used to validate the accuracy of the model. A reasonably good agreement between the analytical and simulation methods as well as the measurements was demonstrated. A significant improvement in computing efficiency was attained, by reducing the computation time from 3 hours for full-wave simulation to 20 seconds with the presented method. These results show that the analytical approach has the potential to be effective for EMC-compliant designs in industrial context
A Comparative Study on the Equivalent Coupling Surface Determination of a Film Capacitor Using Closed TEM, Open TEM, and GTEM Cells
Mohamed Ghjiawad CONGO1,2, Martin HUMEAU1,2,3, Mohsen KOOHESTANI1,4, Marine STOJANOVIC3, Richard PERDRIAU1,4, Frédéric LAFON3, Mohamed RAMDANI1,4
1Ecole Supérieure d'Electronique de l'Ouest (ESEO), Angers 49107 , France; 2Institut National des Sciences Appliquées (INSA), Université de Rennes, Rennes 35708, France; 3VALEO, Ecouflant 49000, Créteil 94000, France; 4Institut d'Electronique et des Technologies du numéRique (IETR), Rennes 35042, France
The equivalent coupling surface (ECS) of passive components plays a key role in studying their mutual magnetic coupling phenomena. To enable an accurate prediction of electromagnetic interference (EMI) filter attenuation essentially below the range of hundreds of MHz, the consideration of these inter-component magnetic coupling phenomena becomes essential. In this paper, an in-depth comparison between the use of three transverse electromagnetic (TEM) cell variants, namely closed, open and gigahertz TEM (GTEM) cells for the determination of the equivalent coupling surface of a film capacitor is presented. Based on the comparison results of this capacitor representing a sample of tested components, this paper aims to show that whatever the used cell, the equivalent coupling surface of passive components can be determined with a good accuracy.
Extraction of the Equivalent Coupling Surface of a capacitor mounted on a PCB using Near-Field Scan
Dennis Wanyoike1, Alexandre Boyer2, Sebastien Serpaud3
1IRT Saint Exupery - Toulouse, France; 2Laboratoire d'analyse et architecture des systèmes - LAAS-CNRS; 3L'institut national des sciences appliquées de Toulouse (INSA Toulouse)
This paper presents an approach to extract the equivalent coupling surface of a capacitor mounted on a PCB. This is the first step of developing a methodology to extract the insertion loss of an EMI filter in situ. The approach utilizes near-field scan technique based on H-field probe coupled to a capacitor on a PCB. The value of mutual inductance between the probe and capacitor is then extracted by post processing. Finally, the equivalent coupling surface is extracted by optimization using GEMSEO tools.
Simulink-Based Analysis of Plane Wave Coupling to a Transmission Line with Non-Linear Terminations
Satanika Lowe, Mathias Magdowski, Ralf Vick
Otto Von Guericke University Magdeburg, Germany
In this paper a simulation-based analysis is presented on coupling of a plane wave to a single wire transmission line above perfectly conducting ground plane. Equivalent circuit model for the transmission line structure simulated in time domain. Coupled sources due to line excitation by an incident plane wave are considered using the Agrawal formulation. The non-linear load system is simulated in MATLAB Simulink and validated against frequency domain BLT equations. Multiple plane wave excitations are considered and analyzed the
coupled voltage at non linear loads.
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