Measurement of complex permittivity of anisotropic dielectric spheres
| Autor: | Rajpal Dudi, Jan Hesselbarth, Daniel Lopez Cuenca |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Permittivity
Materials science Condensed matter physics business.industry Physics::Optics Relative permittivity 020206 networking & telecommunications 02 engineering and technology Dielectric 01 natural sciences Microstrip Vacuum permittivity Resonator Optics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering 010306 general physics business Anisotropy Microwave cavity |
| Zdroj: | 2016 German Microwave Conference (GeMiC). |
| DOI: | 10.1109/gemic.2016.7461655 |
| Popis: | A new concept to measure the dielectric properties of anisotropic spheres at microwave frequency is presented. First, the sphere is placed in a parallel-plate microstrip structure. The anisotropic axis of the sphere is determined in a three-step process. Then, sphere is placed in a rectangular waveguide cavity resonator, where resonance modes of the sphere are excited and subsequently modeled in a field simulation tool. Simulations are matched with measurements by fitting the anisotropic complex permittivity parameters. The procedure is illustrated by determining the anisotropic axis and measuring the anisotropic complex permittivity of a sapphire sphere of 10 mm diameter. |
| Databáze: | OpenAIRE |
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