HTS/ferroelectric devices for microwave applications
Journal article, 1997
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
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
Author
Spartak Gevorgian
Department of Microelectronics and Nanoscience
Erik F. Carlsson
Department of Microwave Technology
Staffan Rudner
Ulf Helmersson
IEEE Transactions on Applied Superconductivity
1051-8223 (ISSN) 15582515 (eISSN)
Vol. 7 2 2458 - 2461Subject Categories
Physical Sciences
Condensed Matter Physics
DOI
10.1109/77.621737