Periodic FDTD Characterization of Guiding and Radiation Properties of Negative Refractive Index Transmission Line Metamaterials
نویسندگان
چکیده
The application of the Finite Difference Time Domain technique, equipped with periodic boundary conditions, can lead to the fast full-wave characterization of negative refractive index (NRI) structures. Employing the so-called sine-cosine method, the guiding and radiating properties of the NRI transmission-line medium are determined. Surface wave effects are captured, while the operation of the medium as a leaky-wave antenna (within its fast-wave region) is also modeled. The efficiency of this approach stems from the fact that all these results are obtained by simulating up to two unit cells of the periodic NRI medium under study.
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