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has been cited by the following article:

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

  AUTHORS: Samia Bouali, Taoufik Aguili

  KEYWORDS: Periodic Structure, Floquet Theorem, Dispersion Relation, Scattering Parameters, Input Impedance

  JOURNAL NAME: Journal of Electromagnetic Analysis and Applications, Vol.3 No.9, September 28, 2011

  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.