Experiments and Model of Intermodulation Distortion in a Rutile Resonator with Y-Ba 2 -Cu 3 -O 7- Endplates

Author： Mateu J.  

Publisher： Springer Publishing Company

ISSN： 0896-1107

Source： Journal of Superconductivity: Incorporating Novel Magnetism, Vol.16, Iss.5, 2003-10, pp. : 873-880

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Abstract

We have derived general equations to calculate intermodulation distortion in resonators with high temperature superconducting (HTS) films which are not restricted to a specific resonator shape and may be used whenever the fields in a resonator generate currents on the surface of one or more HTS films. These equations are applied to rutile-loaded cavities with one or two 10 × 10 mm2 Y-Ba2-Cu3-O7- endplates and are used to extract parameters characterizing the nonlinearities of these films from intermodulation measurements. Even though the films have similar small-signal performance, we have found large variation in the strength of their nonlinearities.

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