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New Formula for Evaluating the Number of Unit Cell of a Finite Periodic Structure Considered as Infinite Periodic One

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DOI: 10.4236/jemaa.2011.39055    4,338 Downloads   7,188 Views   Citations

ABSTRACT

This paper presents a modeling and an analysis of one-dimensional periodic structure composed of a cascade connection of N cells considered as infinite. The ABCD matrix representations with the Floquet analysis have been used to derive the dispersion relation and input impedance of infinite periodic structure. The transmission matrix for the N identical cascaded cells has been successfully used to obtain an efficient and easy-to-use formula giving the necessary number of cells such that they can be considered infinite. As an illustrative example, the formula is applied and verified to finite size TL periodically loaded with obstacles. Scattering parameters and the input impedance of the structure are expressed and plotted.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Bouali and T. Aguili, "New Formula for Evaluating the Number of Unit Cell of a Finite Periodic Structure Considered as Infinite Periodic One," Journal of Electromagnetic Analysis and Applications, Vol. 3 No. 9, 2011, pp. 343-350. doi: 10.4236/jemaa.2011.39055.

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