Open AccessDesign and simulation of a spherical electromagnetic reshaper with a split -ring- resonator microstructure
Author(s) -
Yun Li,
H. Sun
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.094103
Subject(s) - permittivity , microstructure , materials science , resonator , finite element method , split ring resonator , electromagnetic radiation , permeability (electromagnetism) , metamaterial , point (geometry) , optics , acoustics , composite material , physics , optoelectronics , dielectric , geometry , thermodynamics , genetics , mathematics , membrane , biology
Reduced permittivity and permeability profiles are proposed based on the electromagnetic transformation theory to achieve spherical reshapers with a split-ring-resonator(SRRs) microstructure. The effective radial permittivity distribution depending on the structure parameters, is obtained to implement a reshaper impinged by a TE incident wave. Finite-element simualtions are carried out and the results show that a good reshaping effect can be achieved at a working frequency despite the reduced and the discreted material parameters as well as unneglectable dipersion and loss effects. And the frequency band can be broadened by choosing proper microstructures such that the resonance point is far from the distribution range of the structural factors.