Nonlinear RF spurious in a cylindrical cavity with superconducting endplates
Tipus de documentArticle
Data publicació2002-08
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
We have developed a method to calculate the distribution of fundamental and spurious fields in a metallic cylindrical cavity with superconducting endplates in which signals at two different frequencies are injected. The nonlinearity in the superconductor produces the typical intermodulation effects if the frequencies of the injected signals are sufficiently close to each other and near a resonant mode. Our method uses harmonic balance to match the fields in the cavity with the currents on the endplates. The method can be used for a variety of nonlinear models of the superconducting endplate, and could be the base for a nondestructive procedure to extract the nonlinear parameters of an HTS sample from RF measurements. Our analysis is restricted to the TE011 mode, but the method can be applied to any propagating mode in the cylindrical cavity. Closed-form equations for the case of square-law nonlinearities in the superconductor are derived and used to check the validity of the harmonic balance calculation.
CitacióMateu, J., Collado, J., Shaw, T., O'callaghan, J. Nonlinear RF spurious in a cylindrical cavity with superconducting endplates. "Physica C. Superconductivity and its applications", Agost 2002, vol. 372-376, núm. P2, p. 679-682.
ISSN0921-4534
Versió de l'editorhttp://hdl.handle.net/2117/1122
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Nonlinear RF sp ... erconducting endplates.pdf | 101,2Kb | Visualitza/Obre |