Title :
Microwave radiometers optimized for noise measurements on High-Tc superconductors
Author :
Mühlhaus, V. ; Schiek, B.
Author_Institution :
Ruhr-Universitÿt Bochum, Institut fÿr Hochfrequenztechnik, Universitatsstrabe 150, 44780 Bachum, Germany Tel. + 49 234 700 6487, FAX + 49 234 7094 167
Abstract :
It has been shown that High-Te superconducting thin films are suited for a variety of microwave circuit functions. However the noise properties of structures made from these materials have not been investigated intensely. Modifications to the well-known Dicke-radiometer are made to obtain a measurement system suited for the investigation of noise in active High-Tc superconductors. The modifications are described in detail, and results obtained using the measurement system are presented.
Keywords :
Electrical resistance measurement; High temperature superconductors; Impedance measurement; Magnetic field measurement; Magnetic noise; Measurement uncertainty; Noise measurement; Radiometers; Superconducting device noise; Superconducting microwave devices;
Conference_Titel :
Microwave Conference, 1993. 23rd European
Conference_Location :
Madrid, Spain
DOI :
10.1109/EUMA.1993.336628
