| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Souriou, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2022Numerical study to evaluate characteristics of an embedded SHM sensor to prevent rebar corrosion in concrete using magnetic flux density
- 2022Numerical and experimental study to investigate the performance of a novel embedded SHM tool to evaluate chlorides front probability of reinforced concrete structures
- 2018Magnetic and dielectric properties in the UHF frequency band of half-dense Ni-Zn-Co ferrites ceramics with Fe-excess and Fe-deficiencycitations
- 2011Suitability of Ni-Zn Ferrites Ceramics with Controlled Porosity As Granular Substrates for Mobile Handset Miniaturized Antennas
- 2011Pressure Dependence of the Frequency Permeability Spectra of Soft Ferrite Composite Materials: A Method of Measuring the Natural Ferromagnetic Resonance Frequencycitations
- 2010Influential parameters on electromagnetic properties of nickel-zinc ferrites for antenna miniaturization
- 2007Conventional pressing and High Velocity compaction (HVC) of ceramic powders : influence of forming process on sintering
- 2006Comparison of conventional and High Velocity Compaction of alumina powderscitations
- 2006Comparison of Conventional and High Velocity Compaction of Alumina Powderscitations
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article
Influential parameters on electromagnetic properties of nickel-zinc ferrites for antenna miniaturization
Abstract
International audience ; Electromagnetic properties of nickel-zinc ferrites based materials make them potential candidates for applications linked to telecommunications. In the present study nanosized particles of spinel ferrite Ni0.5Zn0.3Co0.2Fe2O4 were prepared by co-precipitation method. An optimized material is obtained after adequate heat treatment and partial filling of the porosity by epoxy resin. This material lies between ceramic and composite medium (with porosity close to 40%), and shows almost constant complex permeability and permittivity in the frequency range from 0.1GHz to 0.7 GHz, and equal to ~3.5-j0.15 (loss tangent~0.04) and ~4-j0.2 (loss tangent ~0.02) respectively. The refractive index n is close to 3.75. These electromagnetic properties, in particular the low levels of losses, show that this material could be useful to the design of miniaturized antennas in the VHF-UHF (300MHz-700MHz) range of frequency.