High-temperature superconducting resonators

Preliminary measurements on high-T/sub c/ superconducting resonators are reported and why they are attractive candidates for incorporation in low-noise oscillators is discussed. Some of the important contributions to oscillator noise are reviewed and how they depend on the resonator parameters is sh...

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Veröffentlicht in:	IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 1992-05, Vol.39 (3), p.398-404
Hauptverfasser:	Taber, R.C., Hollenhorst, J.N., Cutler, L.S., Bagwell, T.L., Newman, N., Cole, B.F.
Format:	Artikel
Sprache:	eng
Schlagworte:	1f noise Applied sciences Circuit noise Circuit properties Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Frequency High temperature superconductors Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Oscillators Phase noise Superconducting device noise Superconducting microwave devices Superconducting transition temperature Temperature dependence
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Zusammenfassung:	Preliminary measurements on high-T/sub c/ superconducting resonators are reported and why they are attractive candidates for incorporation in low-noise oscillators is discussed. Some of the important contributions to oscillator noise are reviewed and how they depend on the resonator parameters is shown. A preliminary YBaCu/sub 3/O/sub 7//LaAlO/sub 3/ resonator with a Q of 910/sup 4/ at 6.9 GHz and 710/sup 4/ at 3.5 GHz has been fabricated. The temperature sensitivity, power dependence, and residual phase noise are discussed. An upper-limit on the coefficient of the 1/f component of fractional-frequency fluctuations has been measured to be -204 dB at 60 K.< >
ISSN:	0885-3010 1525-8955
DOI:	10.1109/58.143173