Electrically controlled HTSC/ferroelectric coplanar waveguide

Author

Gevorgian, S.S. ; Kaparkov, D.I. ; Vendik, O.G.

Author_Institution

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

Volume

141

Issue

6

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

501

Lastpage

503

Abstract

It is shown that in an integrated YBa₂Cu₃O ₇SrTiO₃ structure coplanar waveguide (CPW) electrical control of microwave propagation characteristics is possible. Microwave losses of less than 0.2 dB/cm at 10 GHz can be achieved at liquid nitrogen temperatures, provided ferroelectric films with perfect crystalline structures are used. Electrically controlled changes in effective dielectric permittivity of more than 40% are predicted at 77 K and 10 GHz. Sections of these CPWs can be used in electrically controlled phase shifters and resonators

Keywords

barium compounds; coplanar waveguides; ferroelectric devices; ferroelectric thin films; high-temperature superconductors; losses; microwave devices; permittivity; superconducting devices; superconducting thin films; yttrium compounds; 10 GHz; 77 K; YBa₂Cu₃O₇SrTiO₃; dielectric permittivity; electrical control; electrically controlled HTSC/ferroelectric coplanar waveguide; ferroelectric films; integrated YBa₂Cu₃O₇SrTiO₃ structure coplanar waveguide; microwave losses; microwave propagation characteristics; phase shifters; resonators;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19941444

Filename

340212