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Numerical optimization of hybrid dielectric/HTS resonators for surface impedance evaluation of HTS films
Collado Gómez, Juan Carlos; Gonzalo Riera, David; Rozan, Edouard; O'Callaghan Castellà, Juan Manuel
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RF&MW - Grup de Recerca de sistemes, dispositius i materials de RF i microones
This work describes an alternative to the traditional dielectric resonator topology used for measuring surface impedance in High Temperature Superconducting (HTS) films. A gap is introduced above the dielectric so that only the lower film is in direct contact with it. This arrangement has been used extensively for mechanical tuning of dielectric resonators and, when used for surface impedance measurement, it can be designed to make the losses in the upper film small relative to the overall resonator losses. Then, measured results are mostly due to one of the films and not the average of two. The specifics of a resonator design for measuring 2-inch wafers are presented. An analysis and optimization of the resonator is done using a numerically efficient mode-matching algorithm.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics
Àrees temàtiques de la UPC::Enginyeria electrònica::Circuits electrònics
Dielectric resonators
Impedance (Electricity) Measurement.
Resonators
Superconducting films
Electric impedance measurement
High temperature superconductors
Algorithms
Dielectric losses
Surface measurement
Numerical analysis
Optimization
Dielectric resonator topology
Resonator losses
Numerically efficient mode matching algorithms
Resonadors dielèctrics
Impedància (Electricitat)
Artículo
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
         

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