Design aspects of finite periodic transmission lines based on planar structures

The focus of this manuscript is an analysis of various design aspects of composite right-left handed transmission lines (TLs) with emphasis on practical implementation to periodic structures. Existing used design procedures consider the influence of a period to guided wavelength ratio, coupling of p...

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Bibliographic Details
Main Authors: Zvolensky, T., Ala-Laurinaho, J., Simovski, K., Raisanen, A.
Format: Conference Proceeding
Language:English
Subjects:
Antennas
Couplings
design method
Fabrication
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Metamaterials
parasitic coupling
periodic transmission lines
Photonic band gap
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Summary:The focus of this manuscript is an analysis of various design aspects of composite right-left handed transmission lines (TLs) with emphasis on practical implementation to periodic structures. Existing used design procedures consider the influence of a period to guided wavelength ratio, coupling of parasitic fields, or fabrication inaccuracies to a limited degree. These factors become especially important for composite right/left handed (CRLH) TLs design increasing the frequency of operation. The result of this work is a detailed analysis of finite periodic transmission lines design with regard on the factors mentioned. The optimal value of the period to guided wavelength ratio was found to be 0.1-0.25 for the best trade-off between easy balancing of the unit cell and maintaining the applicability of the Bloch analysis.
ISSN:2164-3342