Applied Physics Letters · 2010 · 40 citations · 16 references
EngineeringElectrical EngineeringMaterials ScienceMicroelectronicsMicrowave EngineeringThin FilmsDielectricsMicrostrip CircuitsMicrowave MeasurementsMicrowave Noise AnalysisMicrowave ResonatorsMicrowave Transmission LinesDielectric Loss MeasurementDielectric ResonatorsMicrostrip ResonatorsMicrostrip Transmission LinesNoise Equivalent PowerQuality FactorsResonator CharacterizationThin-film Dielectrics
Microwave kinetic inductance detectors, or MKIDs, are a type of low temperature detector that exhibit intrinsic frequency domain multiplexing at microwave frequencies. We present the first theory and measurements on a MKID based on a microstrip transmission line resonator. A complete characterization of the dielectric loss and noise properties of these resonators is performed, and agrees well with the derived theory. A competitive noise equivalent power of 5×10−17 W Hz−1/2 at 10 Hz has been demonstrated. The resonators exhibit the highest quality factors known in a microstrip resonator with a deposited thin film dielectric.
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