基于C++SuperMix库的SIS混频器的研究  

Studies on SIS mixer based on C++SuperMix library

作　　者：魏苇 武向农[1] 张毅闻 WEI Wei;WU Xiangnong;ZHANG Yiwen(College of Information,Mechanical and Electrical Engineering,Shanghai Normal University,Shanghai 201418,China;Mathematics&Science College,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]上海师范大学信息与机电工程学院,上海201418 [2]上海师范大学数理学院,上海200234

出　　处：《上海师范大学学报（自然科学版中英文）》2024年第2期254-259,共6页Journal of Shanghai Normal University(Natural Sciences)

基　　金：国家自然科学基金(U2031128);上海师范大学一般科研项目(KF2021104)。

摘　　要：基于C++SuperMix软件库对680 GHz接收机中的双槽双超导隧道结(SIS)混频器进行深入模拟研究.在环境温度为4.2 K、本地振荡器(LO)频率为680 GHz、本振功率为100 nW、中频频率中心为10 GHz和中频匹配阻抗为50Ω的条件下,采用二次谐波的谐波平衡法,在0~500 K热噪声源温度下对SIS混频器的输出噪声温度进行建模仿真研究.计算得出:当偏置电压在2~3 mV变化时,SIS混频器的输出噪声温度均小于50 K,表明所研究的SIS混频器具有较好的噪声性能.Based on the C++SuperMix software library,the in-depth simulation of the dual-slot,double-junction superconductorinsulator-superconductor(SIS)mixer in a 680 GHz receiver was mainly focused on and researched.Under the conditions of setting the simulated ambient temperature at 4.2 K,the local oscillator(LO)frequency at 680 GHz,the local oscillator power at 100 nW,the center of the intermediate frequency at 10 GHz and the intermediate frequency matching impedance at 50Ω,the harmonic balance method of the second harmonic was appied to model and simulate the characteristics of the output noise temperature of the SIS mixer with different thermal noise temperatures from 0 to 500 K.The simulation results showed that when the bias voltage was changing in the range of 2-3 mV,the output noise temperature of the SIS mixer was less than 50 K,which indicated that the studied SIS mixer had outstanding noise performance.

关 键 词：高频混频器 C++编程语言 SuperMix软件库 双槽双超导隧道结(SIS)混频器 

分 类 号：TN773[电子电信—电路与系统]