Attenuation in a Cylindrical Left Handed Material (LHM) Wave-Guide Structure

Hana Mohammed Mousa

Physics Department, Al-Azhar University, Gaza, Palestine.

DOI: 10.4236/opj.2012.21007                

Abstract

This paper tackles the wave attenuation along with a cylindrical waveguides composed of a left Handed material (LHM), surrounded by a superconducting or metal wall. I used the transcendental equations for both TE and TM waves. I found out that the waveguide supports backward TE and backward TM waves since both permittivity and magnetic permeability of LHM are negative. I also illustrated the dependence of the TE and TM wave attenuation on the wave frequency and the reduced temperature of the superconducting wall (T/T_c). Attenuation constant increases by increasing the wave frequency and it shows higher values at higher T/T_c. Lowest wave attenuation and the best confinement are achieved for the thickest TE waveguide. LHM-superconductor waveguide shows lower wave attenuation than LHM-metal waveguide.

Keywords

Left Handed Material; TM Waves; TE Waves; Attenuation Constant; Waveguides; Superconductor; Metal

Conflicts of Interest

The authors declare no conflicts of interest.

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