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FDTD Study on Back Scattering of Conducting Sphere Coated with Double-Negatibe Metamaterials |
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| Authors: | Maoyan Wang Debiao Ge Jun Xu Jian Wu |
| Affiliation: | (1) Institute of Applied Physics, University of Electronics Science and Technology, Chengdu Sichuan, 610054, People’s Republic of China;(2) Physics Department, Xi’dian University, Xi’an shanxi, 710071, People’s Republic of China;(3) National Key Laboratory of Electromagnetic Environment, Beijing, 102206, People’s Republic of China |
| Abstract: | The shift operator method in finite-difference time-domain method for anisotropic double-negative (DNG) metamaterials is derived. The problem which incorporates both anisotropy and frequency dispersion at the same time is solved for the electromagnetic wave propagation in DNG media. By comparing with the mie series solution, the numerical verification of the method and program are confirmed by computing the back scattering of isotropic unmagnetized plasma sphere. The back scattering of conducting sphere coated with DNG media with different parameters is computed by using the shift operator method. One finds that the degree of DNG media’s match and isotropy plays important parts in the decrease of the back scattering of the conducting sphere. This work was supported by National Key Laboratory of Electromagnetic Environment fund (51486030305HT0101). An erratum to this article can be found at |
| Keywords: | Double-negative metamaterials Finite-difference time-domain method Back scattering Anisotropic plasma |
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