Conference paper
Experimental and numerical investigations of oscillations in extracted material parameters for finite Bragg stacks using the NRW method
A 1D dielectric finite Bragg stack situated in a rectangular waveguide and illuminated by the fundamental TE10 mode is examined analytically, numerically, and experimentally. Calculated as well as measured scattering parameters are used to extract the effective/equivalent material parameters for three specific configurations of its constituent unit cell.
Particular attention is devoted to the absence/presence of certain oscillations in the extracted material parameters, depending on the unit cell configuration. The results for the finite Bragg stack are further verified to agree with those of an infinite Bragg stack, for which the dispersion equation is used in conjunction with the Floquet-Bloch harmonics expansion to extract the material parameters.
It is shown that the extracted material parameters for the finite and infinite Bragg stacks agree for the symmetric unit cell configuration.
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2012 |
| Pages: | 2872-2875 |
| Proceedings: | 2012 6th European Conference on Antennas and Propagation |
| ISBN: | 145770918X , 145770918x , 1457709198 , 1457709201 , 9781457709180 , 9781457709197 and 9781457709203 |
| Types: | Conference paper |
| DOI: | 10.1109/EuCAP.2012.6206435 |
| ORCIDs: | Arslanagic, Samel and Breinbjerg, Olav |
1D dielectric finite Bragg stack Floquet-Bloch harmonics expansion NRW method Nicolson-Ross-Weir method TE<sub>10</sub> mode dielectric materials dispersion (wave) dispersion equation electromagnetic oscillations electromagnetic wave scattering infinite Bragg stack material parameter oscillation rectangular waveguide rectangular waveguides scattering parameter symmetric unit cell configuration
