Title :
High temperature superconductor coplanar delay lines
Author :
Hofer, G.J. ; Kratz, H.A. ; Schultz, G. ; Sollner, J. ; Windte, V.
Author_Institution :
Dornier GmbH, Duetsche Aerosp., Friedrichshafen, Germany
fDate :
3/1/1993 12:00:00 AM
Abstract :
Coplanar delay lines of different geometries for YBaCuO films on LaAlO/sub 3/ substrate have been designed and characterized in the time domain. The lines are of the double spiral type with lengths of 257 mm and 434 mm on 10-mm * 10-mm and 20-mm * 20-mm substrates with a measured pulse dispersion of 0.8 ps/cm and 1.8 ps/cm, respectively. A preparation process which meets the requirements for high aspect ratios was used. The measured results have been compared with the corresponding predictions of specially developed electromagnetic simulators which include both the London and the Mattis-Bardeen theory. The agreement between measured and simulated values was sufficient for design purposes.<>
Keywords :
barium compounds; delay lines; high-temperature superconductors; sputter deposition; sputtered coatings; strip line components; superconducting microwave devices; superconducting thin films; yttrium compounds; LaAlO/sub 3/ substrate; YBaCuO-LaAlO/sub 3/; electromagnetic simulators; preparation process; striplines; superconductor coplanar delay lines; time domain characterisation; Delay lines; Dispersion; Electromagnetic measurements; Geometry; High temperature superconductors; Length measurement; Pulse measurements; Spirals; Superconducting films; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
