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US 5,830,591 AGranted
Multilayered ferroelectric composite waveguides
OwnerLouise Sengupta, Michael S. Klushensinventors
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Abstract
A multi-layer Ferroelectric composite wave guide in which the effective dielectric constant of the waveguide can be reduced while maintaining tunability. The waveguide is constructed of high and low dielectric constant layers. The multi-layer waveguide is comprised of bias plates which are perpendicular to the laminate direction on direction of film deposition to maintain tunability in the structure.
Claims8
A multi-layer ferroelectric composite wave-guide comprising:
- a biased, tape cast laminated layers of Barium-Strontium-Titanate represented by the formula Ba.sub.1-x Sr.sub.x TiO.sub.3, wherein x is greater than 0.0, but less than or equal to 0.75, and
- a binary compound selected from the group consisting of ZrO.sub.2, Al.sub.2 O.sub.3, MgO, MgZrO.sub.3, MgZrTiO.sub.3, MgAl.sub.2 O.sub.4, and MgTiO.sub.3, in an amount sufficient to provide a composite having a dielectric constant in the range of approximately 5 to 200, a low loss tangent of approximately 0.001, and tunability of approximately 10.41% to about 15.03% at an electric field of 2 V/micron.
Dependencies are inferred from the claim text.