Comparative modal analysis of NRD parallelepiped dielectric resonators |
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Authors: | Carlo Di Nallo Fabrizio Frezza Alessandro Galli and Paolo Lampariello |
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Institution: | (1) Electronic Engineering Department, La Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy |
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Abstract: | The resonance modes of dielectric resonators having parallelepiped shape are extensively investigated in this work referring to the nonradiative dielectric (NRD) topology. Different numerical techniques, both rigorous and approximated (boundary elements, point matching, finite elements, transmission line approaches), are proposed and implemented to compute the relevant resonance spectrum as a function of the involved geometric and electromagnetic parameters. The theoretical results are discussed and compared also in connection with experimental investigations, carried out on suitable prototypes of NRD components. Qualitative and quantitative information is thus achieved to characterize with accuracy and efficiency the basic parameters (resonant frequencies, field configurations, etc.) involved in filter design and in other applications at microwaves and millimeter waves. |
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Keywords: | Parallelepiped nonradiative dielectric (NRD) resonators Resonance modes Numerical methods in electromagnetics |
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