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Faculty Publications
A K-Band Tunable Microstrip Bandpass Filter Using A Thin-Film Conductor/Ferroelectric/Dielectric Multilayer Configuration
Document Type
Article
Keywords
Ferroelectric thin films, K-band frequencies, Multilayer structures, Tunable bandpass filters
Journal/Book/Conference Title
IEEE Microwave and Guided Wave Letters
Volume
8
Issue
2
First Page
78
Last Page
80
Abstract
We report on a gold/strontium titanate (Au/SrTiO3) thin-film K-band tunable bandpass filter on a lanthanum aluminate substrate. The two-pole filter has a center frequency of 19 GHz and a 4% bandwidth. Tunability is achieved through the nonlinear temperature dependence and the dc electric field dependence of the relative dielectric constant of SrTiO3. A center frequency shift of 0.85 GHz was obtained at 400-V dc bias and 77 K without degrading the insertion loss of the filter.
Department
Department of Industrial Technology
Original Publication Date
2-1-1998
DOI of published version
10.1109/75.658647
Recommended Citation
Subramanyam, Guru; Van Keuls, Fred; and Miranda, Félix A., "A K-Band Tunable Microstrip Bandpass Filter Using A Thin-Film Conductor/Ferroelectric/Dielectric Multilayer Configuration" (1998). Faculty Publications. 3882.
https://scholarworks.uni.edu/facpub/3882