Optimization of uniplanar multilayer structures using nonlinear tunable dielectrics

For an optimization of the tunability of coplanar waveguides (CPW) different geometries have been studied on barium-strontium-titanate (BST) thick films. The presented measurement results show a strong dependency of tunability vs. geometry which can not be calculated using standard conformal mapping...

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Bibliographic Details
Published in2005 European Microwave Conference Vol. 1; p. 4 pp.
Main Authors Giere, A., Scheele, P., Damm, C., Jakoby, R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Binary search trees
Conformal mapping
Coplanar waveguides
Dielectric measurements
Finite difference methods
Geometry
Nonhomogeneous media
Permittivity measurement
Thick films
Time domain analysis
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Summary:For an optimization of the tunability of coplanar waveguides (CPW) different geometries have been studied on barium-strontium-titanate (BST) thick films. The presented measurement results show a strong dependency of tunability vs. geometry which can not be calculated using standard conformal mapping (CM) approaches. To calculate a cross section of a CPW, an FDTD (finite difference time domain) algorithm, expanded to field strength dependent relative permittivities has been implemented. A geometry efficiency factor /spl chi/ is introduced to review the effective tunability for different geometries.
ISBN:9782960055122
2960055128
DOI:10.1109/EUMC.2005.1608918