Study of passive microwave and millimetre wave components based on matematerials and ferrite
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access URL: https://theses.hal.science/tel-00782328
format: HTML
issued: 2026-05-14T20:26:14.986319
modified: 2026-05-14T20:26:14.946139

test_moissonnage_selune
type: Agent

Study of passive microwave and millimetre wave components based on matematerials and ferrite
type: Dataset
contact point: Organization
  fn: CCSD
keyword: theses
keyword: spiotherengineering-sciences-physicsother
keyword: condensateur
keyword: infoeu-reposemanticsdoctoralthesis
keyword: inductors
keyword: metamateriaux
keyword: electronique-des-micro-ondes
keyword: telecommunications----materiaux
keyword: cpw---coplanar-wave-guide
keyword: microwave-ferrite-device
keyword: microwave-electronics
keyword: capacitors
keyword: ferrite
keyword: metamaterials
landing page: https://theses.hal.science/tel-00782328
description: In this thesis we studied some passive components based on metamaterials. Our goal was to assess the physical properties of CRLH lines combined with a ferrite substrate. When the CRLH TLs are integrated with ferrite substrate, new properties based on the “CRLH” structure and nonreciprocity of ferrite can be obtained. Samples were processed on dielectric substrate (alumina) as well as on YIG substrate, according to fabrication steps which are described in this work. These samples have been characterized, in particular for the YIG substrate, with and without a magnetic polarization field. 3D Finite element simulation was used to get the scattering parameters. Lastly, dispersion diagrams were extracted from both measured and simulated data.We can get nonreciprocity by modeling the ferrite substrate, and “left-handed” property by modeling the structure of CRLH. The first chapter of this manuscript focus on theories of microwave transmission lines, coplanar waveguides, magnetic materials and metamaterials. In the second chapter, we designed and implemented conventional CPW components as well as stand-alone capacitors and inductors on alumina substrate. We completed the fabrication process in NANOLYON. Then the simulations in software COMSOL, and the analytical modelling approaches in Matlab are presented. The measured, simulated and analytical S parameters are given, the corresponding propagation constants of CPW, the extracted values of capacitance and inductance are given and discussed. The CPW components on ferrite are introduced in the third chapter. Firstly, different kinds of ferrite and the fabrication of components are presented. Then the modelling of permeability of ferrite material is detailed, and implemented in the 3D finite element simulation. The nonreciprocity is studied using CPW components based on ferrite BaM and YIG. For CPW on ferrite substrate, the measured and simulated S parameters, as well as propagation constant are given. In chapter four, the mo…
identifier: NNT: 2012ISAL0017
issued: 2026-05-14T20:26:14.982358
language: en
modified: 2026-05-14T20:26:14.982363