Title :
Investigating high-Tc superconductors-a cryogenic microwave broad-band calibration
Author :
Reuss, T. ; Richard, J.
Author_Institution :
Centre de Recherches sur les Tres Basses Temp., CNRS, Grenoble, France
fDate :
7/1/2000 12:00:00 AM
Abstract :
A new cryogenic microwave broad-band calibration method for the measurement of the complex input impedance of a one-port network is presented in this paper. The complex impedance is calculated from measurements of the complex reflection coefficient made by a vector network analyzer. To validate the method, low-temperature measurements of metallic microstrips with a known temperature behavior of the resistivity were compared to simulations. Its broad-band nature makes it particularly powerful when exploring a region of the magnetic-field temperature-frequency parameter space of superconductors that was previously inaccessible with a comparable accuracy
Keywords :
calibration; flux flow; high-temperature superconductors; low-temperature techniques; microwave measurement; network analysers; complex input impedance; complex reflection coefficient; cryogenic microwave broad-band calibration; high-Tc superconductors; low-temperature measurements; magnetic-field temperature-frequency parameter space; one-port network; resistivity temperature behavior; vector network analyzer; Calibration; Conductivity; Cryogenics; Impedance measurement; Magnetic analysis; Microstrip; Microwave measurements; Microwave theory and techniques; Reflection; Temperature;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
