| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Bösch, Wolfgang
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023On the Difficulties to Determine the Intrinsic Material Parameters for MnZn Ferritescitations
- 2023Experimental analysis of grounded coplanar waveguide structures based on different PCB processes with uncertainty analysiscitations
- 2022mm-Wave Complex Permittivity Extraction of LTCC Substrate Under the Influence of Surface Roughnesscitations
- 2022Complex Permittivity Measurement of Dielectric Substrates at Millimeter-wave Frequencies
- 2021Additive Manufacturing of Non-homogenous Dielectric Waveguide Structures and Filterscitations
- 2020A D-band 3D printed antennacitations
- 2019Compact broadband frequency selective microstrip antenna and its application to indoor positioning systems for wireless networkscitations
- 2018Emerging technologies and concepts for 5G applications - A. making additive manufactured ceramic microwave filters ready for 5Gcitations
Places of action
| Organizations | Location | People |
|---|
document
On the Difficulties to Determine the Intrinsic Material Parameters for MnZn Ferrites
Abstract
This paper investigates the difficulties of obtaining intrinsic material parameters, permeability, conductivity, and permittivity of MnZn ferrites for the frequency range that is relevant for radiated EMI simulations, up to 300 MHz. Due to the high relative permeability (e.g., 3000 at 1 MHz) and high relative permittivity (e.g., 50000 at 1 MHz) combined with significant DC conductivity it is difficult to obtain intrinsic material parameters needed for electromagnetic full wave simulations. Further, the complexity increases with increasing frequency (e.g., 5 MHz) due to negative apparent permeability. Skin effect and dimensional resonances within the test objects cause a violation of the basic assumptions that are used to extract material parameters from a sample, since the parameters retrieved depend on the size and shape of the test samples. Carefully conducted experiments further showed that the material shows non-reciprocal behavior without DC magnetization and the possibility that the magnetic flux not only depends on the magnetic field, but also on the electric field, suggesting the possibility of bi-anisotropic behavior.