Numerical and Experimental Investigation of Field Distribution in Waveguide Filled With Anisotropic Single Negative Metamaterial (CROSBI ID 510629)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Hrabar, Silvio ; Janković, Gordan ; Živkovic, Berislav ; Šipuš, Zvonimir
engleski
Numerical and Experimental Investigation of Field Distribution in Waveguide Filled With Anisotropic Single Negative Metamaterial
A field distribution in a rectangular waveguide filled with anisotropic single-negative (SNG) metamaterial is analyzed theoretically, numerically and experimentally. A highly simplified scenario with ideal lossless, continuous (either mu-negative (MNG) or epsilon-negative (ENG)) filling material is used in theoretical analysis. The results show that distributions of magnitudes of E and H fields are similar to the associated distributions in ordinary waveguide (filled with double-positive (DPS) material) that operates above cut-off frequency. However, the crucial difference, responsible for recently demonstrated peculiar phenomenon of backward wave propagation below cut-off is a pattern of field lines of either H field (a case with MNG filling) or E field (a case with ENG filling). Numerical approach that dealt with realistic structures (double-ring-resonator-based MNG metamaterial and thin-wire-based ENG metamaterial) confirmed existence of backward-wave propagation. Two experimental waveguides filled with double-ring resonators (an MNG filling) and thin wires (an ENG filling) were successfully designed, manufactured and tested in 8 GHz band. The backward-wave propagation was verified by measurement of a phase distribution along a waveguide with the help of a small E field probe.
12-14.10.2005.; backward wave; waveguide; metamaterial; anisotropy; field line
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Podaci o prilogu
251-253-x.
2005.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 18th International Conference on Applied Electromagnetics and Communications
Bonefačić, Davor
Zagreb: Institute of Electrical and Electronics Engineers (IEEE)
Podaci o skupu
International Conference on Applied Electromagnetics and Communications (18 ; 2005)
poster
12.10.2005-14.10.2005
Dubrovnik, Hrvatska