title: High-temperature superconducting resonators.
abstract: Preliminary measurements on high-T(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 (3)O(7)/LaAlO(3) resonator with a Q of 9x10(4) at 6.9 GHz and 7x10(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.
authors.affiliation: Hewlett-Packard Lab., Palo Alto, CA.
authors.forename: R C
authors.initials: RC
authors.lastname: Taber
authors.forename: J N
authors.initials: JN
authors.lastname: Hollenhorst
authors.forename: L S
authors.initials: LS
authors.lastname: Cutler
authors.forename: T L
authors.initials: TL
authors.lastname: Bagwell
authors.forename: N
authors.initials: N
authors.lastname: Newman
authors.forename: B F
authors.initials: BF
authors.lastname: Cole