Electronics Letters · 1995 · 14 citations · 6 references
Natural SciencesElectrical EngineeringPhysicsCondensed Matter PhysicsElectronic MaterialsSolid State PhysicsHigh-frequency Power ConversionMicrowave FiltersSuperconducting MaterialsSuperconducting Thin FilmsSwitching TechniquesBandstop FiltersFilter ResponseHigh-temperature SuperconductivityHigh-temperature SuperconductorsLow-frequency AttenuationResponse TimeSuperconducting CeramicsSuperconducting Filters
The switching capability of a simple high temperature superconducting (HTS) lumped element bandstop filter is demonstrated. A bias current of the order of the critical current of the HTS material is necessary to switch the filter response from high to low attenuation at the stop-band frequency. A simple theoretical model to describe the ON and OFF states is presented. First measurements of the response time to a pulsed bias current show that the switching time is < 2 µs.
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