Simulation of dielectric resonator for a high-T_c radio frequency superconducting quantum interference device  

作　　者：高吉 杨涛 马平 戴远东 

机构地区：[1]School of Physics and State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,Peking University

出　　处：《Chinese Physics B》2010年第6期507-512,共6页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China (Grant No.2006CB601007);the National Natural Science Foundation of China (Grant No.10674006);the National High Technology Research and Development Program of China (Grant No.2007AA03Z238);the Foundation of the State Key Laboratory of Information Control Technology for Communication System,China (Grant No.9140C1304010803)

摘　　要：Nowadays, the high-critical-temperature radio frequency superconducting quantum interference device （high-Tc rf SQUID） is usually coupled to a dielectric resonator that is a standard 10× 10×1 mm^3 SrTiO3 （STO） substrate with a YBa2Cu3O7-δ （YBCO） thin-film flux focuser deposited on it. Recently, we have simulated a dielectric resonator for the high-Tc rf SQUID by using the ANSOFT High Frequency Structure Simulator （ANSOFT HFSS）. We simulate the resonant frequency and the quality factor of our dielectric resonator when it is unloaded or matches a 50-Ω impedance. The simulation results are quite close to the practical measurements. Our study shows that ANSOFT HFSS is quite suitable for simulating the dielectric resonator used for the high-Tc rf SQUID. Therefore, we think the ANSOFT HFSS can be very helpful for investigating the characteristics of dielectric resonators for high-Tc rf SQUIDs.Nowadays, the high-critical-temperature radio frequency superconducting quantum interference device （high-Tc rf SQUID） is usually coupled to a dielectric resonator that is a standard 10× 10×1 mm^3 SrTiO3 （STO） substrate with a YBa2Cu3O7-δ （YBCO） thin-film flux focuser deposited on it. Recently, we have simulated a dielectric resonator for the high-Tc rf SQUID by using the ANSOFT High Frequency Structure Simulator （ANSOFT HFSS）. We simulate the resonant frequency and the quality factor of our dielectric resonator when it is unloaded or matches a 50-Ω impedance. The simulation results are quite close to the practical measurements. Our study shows that ANSOFT HFSS is quite suitable for simulating the dielectric resonator used for the high-Tc rf SQUID. Therefore, we think the ANSOFT HFSS can be very helpful for investigating the characteristics of dielectric resonators for high-Tc rf SQUIDs.

关 键 词：dielectric resonator YBCO rf SQUID HFSS 

分 类 号：TN629.1[电子电信—电路与系统]