The high power generation and transmission for TM modes in a parallel-plate waveguide filled with three-layered medium called sandwich structure are investigated. The transmission power could never exceed the input power of the source in a conventional parallel-plate waveguide filled with homogeneous or inhomogeneous right-handed material (RHM) or homogenous left-handed material (LHM). Based on the stratified medium theory, extremely high power can be generated and transmitted if the waveguide is composed of RHM-LHM-RHM or LHM-RHM-LHM sandwich structure with the medium parameters and layer thickness being properly chosen. Different from the TE case, the dominant mode exists in such a structure is TM0 mode which can be always supported despite the size of the waveguide. From our numerical results, we find that the high power generation and transmission can be easily realized even in the more realistic case where the LHM is described by the Lorentz medium model.
9. Garcia, N. and M. Nieto-Vesperinas, "Left-handed materials do not make a perfect lens," Phys. Rev. Lett., Vol. 88, 207403, 2002. doi:10.1103/PhysRevLett.88.207403
10. Ramakrishna, S. A. and J. B. Pendry, "The asymmetric lossy near-perfect lens," J. Modern Opt., Vol. 49, 2002.
11. Engheta, N., "An idea for thin subwavelength cavity resonators using metamaterials with negative permittivity and permeability," IEEE Antennas Wireless Propagat. Lett., Vol. 1, 2002. doi:10.1109/LAWP.2002.802576
12. Nefedov, I. S. and S. A. Tretyakov, "Waveguide containing a backward-wave slab," Radio Sci., Vol. 38, 2003. doi:10.1029/2003RS002900
13. Pendry, J. B. and S. A. Ramakrishna, "Focusing light using negative refraction," J. Phys.: Condens. Matter, Vol. 15, 6345-6364, 2003. doi:10.1088/0953-8984/15/37/004
14. Cui, T. J., Q. Cheng, W. B. Lu, Q. Jiang, and J. A. Kong, "Localization of electromagnetic energy using a left-handedmedium slab," Phys. Rev. B, Vol. 71, 045114, 2005. doi:10.1103/PhysRevB.71.045114
15. Cheng, Q. and T. J. Cui, "High-power generation and transmission through a left-handed material," Phys. Rev. B, Vol. 72, 113112, 2005. doi:10.1103/PhysRevB.72.113112
16. Harrington, R. F., Time-Harmonic Electromagnetic Fields, McGraw-Hill Book Co., New York, 1961.
17. Chew, W. C., Wave and Fields in Inhomogeneous Media, 2nd edition, IEEE Press, New York, 1995.
18. Xu, W., L. W. Li, H. Y. Yao, T. S. Yeo, and Q. Wu, "Lefthanded material effects on waves modes and resonant frequencies: filled waveguide structures and substrate-loaded patch antennas," Journal of Electromagnetic Waves andApplic ations, Vol. 19, No. 15, 2033-2047, 2005. doi:10.1163/156939305775570459
20. Wongkasem, N., A. Akyurtlu, J. Li, A. Tibolt, Z. Kang, and W. D. Goodhue, "Novel broadband terahertz negative refractive index metamaterials: analysis and experiment," Progress In Electromagnetics Research, Vol. 64, 205-218, 2006.