Planar Transmission Line Medium With Negative Refractive Index Based on Complementary Omega-Like Structure

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....

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2008-09, Vol.18 (9), p.575-577
Main Authors: Messiha, N.T., Ghuniem, A.M., EL-Hennawy, H.M.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Complementary omega-like structure (COLS)
Computer simulation
Dispersions
Electric, optical and optoelectronic circuits
Electromagnetic radiation
Electromagnetic scattering
Electronics
Exact sciences and technology
Ground plane
left-handed metamaterials
Magnetic materials
Materials
Mathematical models
Metamaterials
Microstrip
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
Permeability
Permittivity
planar structure
Planar transmission lines
Refractive index
Refractivity
Transmission lines
Wires
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Summary: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.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2008.2002446