Title :
Lumped element modeling of nonlinear properties of high temperature superconductors in a dielectric resonator
Author :
Ledenyov, Dimitri ; Mazierska, Janina ; Allen, Greg ; Jacob, Mohan
Author_Institution :
Electr. & Comput. Eng., James Cook Univ., Townsville, Qld., Australia
Abstract :
Microwave properties of high temperature superconductors (HTS) can be strongly affected by RF power levels. Effects of nonlinear phenomena causing this dependence can be modelled using lumped element circuits. We investigated several RLC circuits to model the surface impedance of HTS films, derived equations expressing the transmitted power and assessed models´ suitability. Linear, quadratic and exponential dependences of surface resistance RS and inductance LS on the RF magnetic field for the most suitable model have been used in simulations of electromagnetic responses of superconducting films in the Hakki-Coleman dielectric resonator.
Keywords :
dielectric resonators; films; high-temperature superconductors; lumped parameter networks; magnetic fields; HTS film; Hakki-Coleman dielectric resonator; RF magnetic field; RLC circuit; dielectric resonator; electromagnetic response; exponential dependence; high temperature superconductor; inductance LS; linear dependence; lumped element circuit; lumped element modeling; microwave property; nonlinear phenomena; quadratic dependence; superconducting film; surface impedance; surface resistance RS; Dielectrics; High temperature superconductors; Inductance; Magnetic films; Nonlinear equations; RLC circuits; Radio frequency; Superconducting films; Surface impedance; Surface resistance;
Conference_Titel :
Microwaves, Radar and Wireless Communications, 2004. MIKON-2004. 15th International Conference on
Print_ISBN :
83-906662-7-8
DOI :
10.1109/MIKON.2004.1358485
