Magnetically tunable superconductor filters using yttrium iron garnet films
作者： M. Tsutsumi , T. Fukusako , H. Shimasaki
DOI: 10.1109/20.489538
关键词: Superconductivity 、 Yttrium iron garnet 、 Laser linewidth 、 Optoelectronics 、 Q factor 、 Liquid nitrogen 、 Microstrip 、 High-temperature superconductivity 、 Center frequency 、 Materials science
摘要: Magnetically tunable superconducting single-resonator filters using YIG films have been demonstrated experimentally. Tunability of 400 MHz at a center frequency 6 GHz was achieved for half wavelength microstrip comprising YIG-YBCO-MgO composite structure. The reason why the quality factor filter is relatively low possibly due to an increase magnetic linewidth /spl Delta/H liquid nitrogen temperature. theory on dispersion relation also presented.
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