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.
|Number of pages||10|
|Publication status||Published - 1 Jul 2006|
- phase shifters
- coplanar waveguide
- barium strontium titanate