Abstract
Superconducting, monolithic magnetically tunable microwave filters have been designed and fabricated demonstrating high tuning ranges (up to 19%) at a center frequency of 10 GHz. These filters are based on fully epitaxial YBa2Cu3O7 (YBCO) thin films grown by pulsed laser deposition onto liquid-phase epitaxy yttrium iron garnet (YIG) layers on gadolinium iron garnet (GGG) substrates. Mechanisms resulting in variations of the bandwidth and insertion losses upon tuning are analyzed and understood in terms of the material properties of YIG and GGG.
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Silliman, S., Christen, HM., Knauss, L. et al. Magnetically Tunable Microwave Filters based on YBCO/YIG/GGG Heterostructures. Journal of Electroceramics 4, 305–310 (2000). https://doi.org/10.1023/A:1009902306806
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DOI: https://doi.org/10.1023/A:1009902306806