Microwave properties of (Ba,Sr)TiO3 ceramic films and phase-shifters on their base

Authors
Kozyrev, A Keis, V Osadchy, V Pavlov, A Buslov, O Sengupta, L
Citation
A. Kozyrev et al., Microwave properties of (Ba,Sr)TiO3 ceramic films and phase-shifters on their base, INTEGR FERR, 34(1-4), 2001, pp. 1629-1635
Citations number
3
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Eletrical & Eletronics Engineeing
Journal title
INTEGRATED FERROELECTRICS
ISSN journal
10584587 → ACNP
Volume
34
Issue
1-4
Year of publication
2001
Pages
1629 - 1635
Database
ISI
SICI code
1058-4587(2001)34:1-4<1629:MPO(CF>2.0.ZU;2-D
Abstract
The small signal dielectric properties (epsilon, tan delta) of ceramic (Ba, Sr)TiO3 (BSTO) films in the frequency range (1-30) GHz we're under investig ation. The Q-factor and tunability were measured for planar BSTO ceramic va ractors and are presented in comparison with similar parameters for semicon ductor varactors. To illustrate the possibility of the use of BSTO ceramic films at 30 GHz, a phase shifter based on grounded coplanar waveguide (CWG) has been designed and experimentally tested. The device demonstrated phase shift up to Delta phi = 370 degrees under the bias voltage (0-350) V and i nsertion loss L = (4-6) dB in all range of bias voltages.