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

• 作者: Hana Mohammed Mousa
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: LEFT Handed Material TM WAVES TE WAVES ATTENUATION Constant WAVEGUIDES SUPERCONDUCTOR Metal
• 年，卷（期）: 2012,（1）
• 页码范围: 46-53
• 页数: 8页
• 分类号: R73

摘要

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/Tc). Attenuation constant increases by increasing the wave frequency and it shows higher values at higher T/Tc. 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.