Title :
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
fDate :
12/1/1994 12:00:00 AM
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;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19941444
