How nonreciprocal is an effective permittivity matrix?

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2018-2021
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number9
Publication statusPublished - Sep 2014


  • effective permittivity matrix
  • nonreciprocal devices
  • scattering parameters

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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