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Jackson, Timothy
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Topics
Publications (12/12 displayed)
- 2015Influence of Uncertainty in Dielectric Properties on the Design Performance of a Tunable Composite Right/Left Handed Leaky Wave Antenna
- 2014Uncertainties in the permittivity of thin films extracted from measurements with near field microwave microscopy calibrated by an image charge modelcitations
- 2012Line defects, planar defects and voids in SrTiO3 films grown on MgO by pulsed laser and pulsed laser interval depositioncitations
- 2010Microstructural investigation of strontium titanate films grown by interval pulsed laser depositioncitations
- 2009Two-dimensional growth of SrTiO3 thin films on (001) MgO substrates using pulsed laser deposition and reflection high energy electron diffractioncitations
- 2009Comparison of structural, microstructural, and electrical analyses of barium strontium titanate thin filmscitations
- 2008Growth and Microstructural Studies of Strontium Titanate Films Grown by Standard and Interval Pulsed Laser Depositioncitations
- 2006Microstructure of Homeoepitaxial SrTiO₃ Thin Films Grown by Laser Ablationcitations
- 2006Temperature Dependent Dielectric Properties of Coplanar Phase Shifters Fabricated from Ba₀.₅SR₀.₅Ti0₃ Thin Filmscitations
- 2006Microwave and Microstructural Properties of Ba₀.₅Sr₀.₅TiO₃ of Thin Film Coplanar Phase Shifterscitations
- 2004Holes in YBa₂Cu₃0₇₋x Thin Films on Vicinal Strontium Titanate Substratescitations
- 2004Growth, Microwave Properties and Microstructure of Ba₀₊₀₅Sr₀₊₉₅TiO₃ Thin Filmscitations
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article
Microwave and Microstructural Properties of Ba₀.₅Sr₀.₅TiO₃ of Thin Film Coplanar Phase Shifters
Abstract
Coplanar waveguide transmission lines have been used to show that the temperature dependent properties of Ba0.5Sr0.5TiO3 thin films used for microwave phase shifters in the frequency range 45 MHz-50 GHz are correlated strongly with the microstructure of the films. The highest tunability and figure of merit of the phase shifters were obtained for films with the narrowest ferroelectric-paraelectric phase transition range, lowest mosaic spread, and widest columnar microstructure. The study also showed that the operating temperature plays an important role in achieving the optimum phase shift for microwave applications. (c) 2006 American Institute of Physics.