Temperature Dependent Dielectric Properties of Coplanar Phase Shifters Fabricated from Ba₀.₅SR₀.₅Ti0₃ Thin Films

Phe Suherman, Timothy Jackson, Yau Tse, Michael Lancaster

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5 Citations (Scopus)

Abstract

This paper presents an analysis of the temperature dependent properties and performance of coplanar waveguide transmission lines on Ba0.5Sr0.5TiO3 (BST) thin films. Comparison of the temperature dependent permittivity at microwave frequencies with models of heterogeneous ferroelectrics reveals significant physical properties, such as the Curie temperature, Curie-Weiss constant, and statistical defects in the films. The maximum phase shift and tunability are obtained at the temperature where the permittivity is highest.
Original languageEnglish
Pages (from-to)69-78
Number of pages10
JournalFerroelectrics
Volume335
DOIs
Publication statusPublished - 1 Jul 2006

Keywords

  • phase shifters
  • coplanar waveguide
  • barium strontium titanate

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