Magnetic resonances in metallic double split rings : Lower frequency limit and bianisotropy
Magnetic resonances in metallic double split rings : Lower frequency limit and bianisotropy
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DOI:
10.1063/1.2431776
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发表时间:
2007-01
影响因子:
4
通讯作者:
Lei Zhou;S. Chui
中科院分区:
文献类型:
--
作者:
Lei Zhou;S. Chui
The authors employ a rigorous theory to study the electromagnetic resonances in double split rings of circular cross sections. The inter-ring interactions split each single-ring mode to two modes with different symmetries, and the bianisotropy of each mode is suppressed as two rings approach. They obtain analytical expressions to estimate the frequency of the fundamental (magnetic) mode, which facilitate the design of structures with the lowest possible resonance frequencies. Numerical calculations based on the present theory are supported by finite-difference-time-domain simulations on realistic structures and experimental data published previously.