An anisotropic metamaterial-based rectangular resonant cavity |
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| Authors: | F-Y Meng Q Wu J-H Fu X-M Gu L-W Li |
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| Institution: | (1) School of Electronics and Information Technology, Harbin Institute of Technology (HIT), Harbin, Heilongjiang, 150001, P.R. China;(2) Department of Electrical & Computer Engineering, National University of Singapore, Kent Ridge, Singapore, 119260, Singapore |
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| Abstract: | Resonance properties of a rectangular resonant cavity filled with an anisotropic metamaterial bilayer are investigated. Different
from the isotropic case and the one-dimensional resonator, the resonance properties in such a cavity are closely related to
the dispersion relation of the anisotropic medium. Three cases including six subcases of different combinations of metamaterials
are discussed and it is found that subwavelength resonance modes may occur in all subcases. Particularly, the relation between
resonance modes and the transverse cavity width is investigated, and calculated results show that there are infinite subwavelength
resonance modes as the transverse cavity width approaches zero. Requirements of the material and geometry parameters to construct
a subwavelength resonant cavity are revealed by theoretical analysis, which demonstrates that this kind of subwavelength resonator
brings more design flexibility and tolerance.
PACS 78.70.Gq; 81.05.Zx; 84.40.Ba |
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