Premium
How nonreciprocal is an effective permittivity matrix?
Author(s) -
Valagiannopoulos Constantinos A.
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28523
Subject(s) - circulator , permittivity , microwave , scattering parameters , matrix (chemical analysis) , impedance parameters , gyrator , slab , electronic engineering , metamaterial , port (circuit theory) , scattering , physics , computer science , optics , electrical impedance , engineering , materials science , electrical engineering , optoelectronics , telecommunications , dielectric , geophysics , composite material
The property of nonreciprocity in electromagnetic structures is a pivotal feature when designing useful devices such as directional phase shifters, circulators, isolators, and gyrators. The performance of these components is judged by the “nonreciprocity index,” indicating the degree of nonreciprocity. In this work, we consider a slab filled with a homogeneous anisotropic medium with an arbitrary and full permittivity matrix. The scattering parameters of the formulated four‐port network are analytically evaluated and a “nonreciprocity index” is defined. The variations of this function with respect to the complex elements of the effective permittivity matrix are shown and general conclusions are drawn. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2018–2021, 2014