Title :
Planar X-band SQUID-gradiometer design for HTS applications
Author :
Mayer, B. ; Knochel, R. ; Bade, T. ; Schilling, M. ; David, B.
Author_Institution :
Tech. Univ. Hamburg-Harburg, Germany
Abstract :
An RF-SQUID (superconducting quantum interference device) gradiometer integrated in a lambda /2 length microstrip resonator is described. The device was realized with low-temperature superconductors (LTS) using a shunted NbN/MgO/NbN SIS (superconductor-insulator-superconductor) junction as the active element. Various measurement results are given. Measurements of the complex reflection coefficient clearly show a periodic dependence on an applied DC flux. Due to the fully planar design, the SQUID is an appropriate basic element of a one-chip magnetometer including flux transformer. Work is under way to realize the circuit in high-temperature superconductors.<>
Keywords :
SQUIDs; high-temperature superconductors; magnetometers; microstrip components; superconducting integrated circuits; HTS applications; NbN-MgO-NbN; RF-SQUID; X-band SQUID-gradiometer; active element; applied DC flux; complex reflection coefficient; flux transformer; high-temperature superconductors; low-temperature superconductors; microstrip resonator; one-chip magnetometer; shunted SIS junction; High temperature superconductors; Josephson junctions; Magnetic fields; Microstrip resonators; Radio frequency; Resistors; SQUIDs; Superconducting devices; Superconducting microwave devices; Superconductivity;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.188016
