Title :
Calorimetric measurements of microwave surface resistance at cryogenic temperature
Author :
Andreone, D. ; Brunetti, L. ; Petrizzelli, M.
Author_Institution :
IEN Galileo Ferraris, Torino, Italy
Abstract :
The measurement of the surface impedance is always difficult at microwave frequencies, especially for superconductors. We give a new method particularly suitable for thin films. It is based on a microcalorimeter whose thermal load is realized by a superconducting thin film that works as a bolometer. The measurement system has been tested in Ka-frequency band for classic superconductors.
Keywords :
bolometers; calorimeters; calorimetry; cryogenics; electric resistance measurement; high-temperature superconductors; measurement errors; microwave measurement; superconducting thin films; 33 GHz; 4.2 K; HTSC; Ka-frequency band; adiabatic calorimeter; bolometer; bolometer mount; calorimetric measurements; cryogenic temperature; electrical substitution principle; error terms; microcalorimeter; microwave surface resistance; self-balancing loop; superconducting thin film; superconducting thin films; surface impedance measurement; thermal load; Electrical resistance measurement; Frequency measurement; Impedance measurement; Microwave frequencies; Microwave measurements; Superconducting thin films; Superconductivity; Surface impedance; Surface resistance; Thermal loading;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.546778
