Home – Home – Jornals – Avtometriya 2004 number 1

The possibilities of applying the high-temperature superconducting quantum interferometers in measurement systems are investigated. Various designs of quantum interferometers are used: one-circuit, two-circuit, and Harvey interferometers. The following characteristics of the measurement systems are considered: the coefficient of input magnetic flux transformation to output voltage of the measurement channel, the sensitivity threshold, the frequency dependence of input noise spectral density, the amplitude frequency characteristic of magnetic flux transformation to output voltage of the measurement channel, and the upper boundary frequency of the measurement channel bandwidth. A method for investigating these characteristics is described and results are presented. It is shown that the Zimmermann type of interferometers is the most promising one. Applications of a magnetometer to finite measurement systems are illustrated.