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宽频馈源致冷测试讨论

Jinling Li,Shiguang Liang,Kaihua Deng,Shengwang Wang,Fei Huang,Cong Liu,Zhongmiao Sun

Cryogenics and Superconductivity（2016）

Cited 1|Views3
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Abstract
针对宽频馈源致冷测试实验中出现的某些异常现象和测试数据波动性较大的问题,仿真分析了可能原因,为后续测试提供参考.基本结论为,应确保系统增益与测试仪器线性范围的匹配,尽量减小输出功率的测试误差;应尽量增加带宽内测量频点的数目,以利于判别驻波和编辑与筛选测量数据;可依据y因子的合理取值范围甄别测量粗差;将馈源向下对准液氮表面,在理论上更具自洽性.
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Key words
Broadband feed,Cooled measurement,Equivalent noise temperature,Simulation analysis
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