HTS/ferroelectric devices for microwave applications

Author

Gevorgian, S.S. ; Carlsson, E.F. ; Rudner, S. ; Helmersson, U. ; Kollberg, E.L. ; Wikborg, E. ; Vendik, O.G.

Author_Institution

Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

2458

Lastpage

2461

Abstract

High Temperature Superconducting (HTS, e.g. YBCO) microwave devices based on bulk or thin film ferroelectrics (e.g. Strontium Titanate-STO) are studied theoretically and experimentally. YBCO/STO/YBCO parallel-plate resonators and based on bulk single crystal STO are for electrically tunable high power filters, phase shifters and other devices in the frequency band 0.5-2.0 GHz of advanced microwave communication systems. Thin film YBCO/STO Inter-digital Capacitors (IDC), Coplanar Waveguides (CPW) phase shifters/delay lines are also designed and studied experimentally for low microwave power applications. Modelling problems of these devices and microwave losses in ferroelectrics are also discussed.

Keywords

barium compounds; ferroelectric devices; high-temperature superconductors; strontium compounds; superconducting microwave devices; yttrium compounds; 0.5 to 2.0 GHz; HTS/ferroelectric device; STO; YBCO; YBaCuO-SrTiO/sub 3/; bulk single crystal; coplanar waveguide; delay line; electrically tunable high power filter; high temperature superconductor; inter-digital capacitor; loss; low power microwave device; microwave communication; modelling; parallel-plate resonator; phase shifter; thin film; Coplanar waveguides; Ferroelectric devices; Ferroelectric materials; High temperature superconductors; Microwave devices; Phase shifters; Superconducting filters; Superconducting microwave devices; Superconducting thin films; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.621737

Filename

621737