中国物理B ›› 2008, Vol. 17 ›› Issue (1): 164-169.doi: 10.1088/1674-1056/17/1/029

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Super energy flows in a waveguide filled with air and left-handed materials

崔铁军1, 余观夏2   

  1. (1)Center for Computational Electromagnetics and the State Key Laboratory of Millimeter Waves,\Department of Radio Engineering, Southeast University, Nanjing 210096, China; (2)Center for Computational Electromagnetics and the State Key Laboratory of Millimeter Waves,\Department of Radio Engineering, Southeast University, Nanjing 210096, China\;College of Information Science and Technology, Nanjing Forestry University, Nan
  • 出版日期:2008-01-20 发布日期:2008-01-20
  • 基金资助:
    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

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)   

  1. 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
  • Online:2008-01-20 Published:2008-01-20
  • Supported by:
    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

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摘要： 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 $\epsilon_{{\rm r}1}=-1/(1+\delta)+\i\gamma$ and $\mu_{{\rm r}1}=-(1+\delta)+\i\gamma$. 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.

关键词: super energy flows, left-handed materials

Abstract:

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.

Key words: super energy flows, left-handed materials

中图分类号:  (Waveguides, transmission lines, striplines)

  • 84.40.Az
41.20.Jb (Electromagnetic wave propagation; radiowave propagation)