A K-BAND TUNABLE MICROSTRIP BANDPASS FILTER USING A THIN-FILM CONDUCTOR FERROELECTRIC/DIELECTRIC MULTILAYER CONFIGURATION/

Authors
SUBRAMANYAM G VANKEULS F MIRANDA FA
Citation
G. Subramanyam et al., A K-BAND TUNABLE MICROSTRIP BANDPASS FILTER USING A THIN-FILM CONDUCTOR FERROELECTRIC/DIELECTRIC MULTILAYER CONFIGURATION/, IEEE microwave and guided wave letters, 8(2), 1998, pp. 78-80
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE microwave and guided wave letters → ACNP
ISSN journal
10518207
Volume
8
Issue
2
Year of publication
1998
Pages
78 - 80
Database
ISI
SICI code
1051-8207(1998)8:2<78:AKTMBF>2.0.ZU;2-B
Abstract
We report on a gold/strontium titanate (Au/SrTiO3) thin-film K-band tu nable bandpass filter on a lanthanum aluminate substrate. The two-pole filter has a center frequency of 19 GHz and a 4% bandwidth, Tunabilit y is achieved through the nonlinear temperature dependence and the de electric field dependence of the relative dielectric constant of SrTiO 3. 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.