Super energy flows in a waveguide filled with air and left-handed materials
Yu Guan-Xia(余观夏)a)b)† and Cui Tie-Jun(崔铁军)a)
a Center for Computational Electromagnetics and the State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University, Nanjing 210096, China; b College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037, China
The phenomena of super energy flows are studied theoretically and numerically in a parallel-plate waveguide which is filled with two layered equally-thick different media, i.e. air and specific left-handed materials (LHM) with $\epsilon_{\rm r1}=-1/(1+\delta)+{\rm i}\gamma$ and $\mu_{\rm r1}=-(1+\delta)+{\rm i}\gamma$. In this special waveguide, two-directional super-energy flows are excited by a three-dimensional horizontal electric dipole at the same time, which has transmission patterns different from those of two-dimensional source and three-dimensional vertical electric dipole. We also show that the retardation and loss in LHM are sensitive to the amplitude of super power densities, and the dimensions of waveguide determine the propagating modes, which makes super energy flows more practical.
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 60671015, 60225001
and 60621002), The State Key Development Program for Basic Research
of China (Grant No 2004CB719802), and the Doctorate Found of State
Education Commissio
Cite this article:
Yu Guan-Xia(余观夏) and Cui Tie-Jun(崔铁军) Super energy flows in a waveguide filled with air and left-handed materials 2008 Chin. Phys. B 17 164
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