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本文介绍了约瑟夫逊混频器(RSJM)的实验室线路和测试方法的设计;讨论了如何根据Y因子法测量精度的要求和混频器的饱和特性来合理配置信号通道和本振通道;介绍了一种连续用三次Y因子法测量的方法.可快速、准确地测定混频器的变频效率η和等效噪声温度Tm;最后还谈到了β~2的测试方法。
This article introduces the design of the laboratory circuitry and test methods for the Josephson mixer (RSJM). It discusses how to properly configure the signal path and the LO path based on the accuracy of the Y-factor method and the saturation characteristics of the mixer. A method of continuous measurement using three times Y factor method can be quickly and accurately measured mixer frequency conversion efficiency η and equivalent noise temperature Tm; Finally, also talked about the beta ~ 2 test method.