Title :
Planar Transmission Line Medium With Negative Refractive Index Based on Complementary Omega-Like Structure
Author :
Messiha, Nardeen Tharwat ; Ghuniem, Atef M. ; EL-Hennawy, Hadia M.
Author_Institution :
Dept. of Electr. Eng., Suez Canal Univ., Port-Said
Abstract :
A new planar left-handed transmission line medium based on complementary omega-like structure (COLS) is proposed. A microstrip implementation of the structure is demonstrated. By etching COLS in the ground plane just below the strip, a band over which the refractive index is negative has been found. Numerical simulation of the scattering (S) parameters for the proposed structure is presented. Simulated dispersion characteristic is also shown. The structure under study has been fabricated and very good agreement has been found between measured and simulated frequency responses.
Keywords :
coplanar transmission lines; frequency response; metamaterials; microstrip lines; refractive index; complementary omega-like structure; ground plane; microstrip implementation; negative refractive index; planar left-handed transmission line medium; planar transmission line medium; scattering parameters; simulated dispersion characteristic; simulated frequency responses; Electromagnetic radiation; Electromagnetic scattering; Magnetic materials; Metamaterials; Microstrip; Permeability; Permittivity; Planar transmission lines; Refractive index; Wires; Complementary omega-like structure (COLS); left-handed metamaterials; microstrip; planar structure;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.2002446
