Efficient numerical evaluation of superconducting microstrip structures with bianisotropic layers

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Toscano, Alessandro^{a; *} | Vegni, Lucio^a

Affiliations: [a] University of "Roma Tre", Department of Applied Electronics, Via della Vasca Navale, 84 00146 Roma, Italy

Correspondence: [*] Corresponding author: Tel.: +39 06 55177095; E-mail: [email protected]

Abstract: An efficient procedure is developed for characterizing the frequency-domain behavior of superconducting microstrip planar structures with non conventional (bianisotropic) layers. Most of the frequency domain techniques in computational electromagnetics result in a matrix equation, which is solved at a single frequency. In the proposed technique, a rational function expansion around that frequency is applied to the matrix equation. This paper addresses three aspects in employing such an expansion: a) a generalization of the spectral domain analysis of superconducting patch antennas over bianisotropic layers, b) a robust and reliable estimation of confidence in the interpolated values, c) a criterion for selecting new sample frequencies. As a first numerical example, the radiation efficiency as a function of thickness for a copper and superconducting square patch antenna is presented.

Keywords: green functions, superconducting materials, rational approximation

DOI: 10.3233/JAE-2004-528

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 15-18, 2004