RF Power Properties of YBCO-Film/LAO Microstrip Disk Resonators for 4GHz Band(<Special Section> Superconducting High-frequency Devices)

概要

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This paper presents RF power properties of YBCO films on LaAlO_3 substrate examined using microstrip disk shape-patterned resonators for around 4GHz. Characterization of the YBCO films for the resonators was carried out. For input-output power measurement, the resonators with the condition of strong I/O couplings were designed and fabricated. The RF power properties of the resonators at cryogenic temperatures were measured. The resonator condition to obtain the handling power over 10W at 30 and 70K was confirmed. The temperature dependence of the break-down powers at 4GHz for the resonators showed two broad peaks. We discuss the unique phenomenon with magnetic flux model, as referred to the YBCO films characteristics results.
社団法人電子情報通信学会の論文
2006-02-01