Title :
First measurement of a superconducting microstrip-line attenuation constant at 10 GHz
Author_Institution :
Physikalisch-Technische Bundesanstalt, Braunschweig, West Germany
Abstract :
An Nb/Nb2O5/PbInAu microstrip resonator of 0.4 ¿m di-electric height at 10 GHz and 4.2 K exhibited an unloaded Q of 257 with a measurement uncertainty of ±5%. This confirms the conductor losses calculated according to the Mattis-Bardeen theory. The dielectric loss factor of Nb2O5 at 10 GHz and 4.2 K is also confirmed by this measurement to be as in the subgigahertz range, namely 2.1 × 10¿3.
Keywords :
microwave measurement; strip line components; superconducting junction devices; 10 GHz; Mattis-Bardeen theory; Nb/Nb2O5/PbInAu microstrip resonator; attenuation constant measurement; conductor losses; dielectric loss factor; super-conducting microstrip-line;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820753
