Analysis of asymmetrical multilayer ferrite-loaded finlines by the extended spectral domain approach

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he spectral domain approach is extended to analyze the nonreciprocal propagation characteristics of asymmetrical multilayer tinlincs containing magnetized ferrites. This extended method offers several advantages. It can be applied to nonuniform cross-section geometries, uses only one set of basis functions, and the dyadic Green's function is efficiently derived by a recursive algorithm. Fast convergence is obtained and the accuracy of the method is verified by comparison with available computed and measured data. In comparison with symmetrical structures, the additional design degree of freedom of the asymmetry can be used to obtain wider bandwidth and higher nonreciprocity. Of the various structures considered, a four-layer dual ferrite (DF) structure is seen to be the best choice for realization of nonreciprocal phase shifters with widest bandwidth.

Original languageEnglish
Pages (from-to)497-504
Number of pages8
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number4
Publication statusPublished - 1 Apr 1996

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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