有耗传输线滤波器的Millikelvin热和电性能
Millikelvin thermal and electrical performance of lossy transmission line filters
摘要：
我们报告的散射参数和约翰逊噪声发射的低通带状线滤波器采用磁加载硅介质下降到25 mK。$f_{-3dB}$ =1.3 GHz的器件的传输特性在冷却时基本保持不变。另一个器件的$f_{-3dB}$ =0.4 GHz，在其阻带中测量，相对于温度低至25 mK的良好锚定的低温微波衰减器，其稳态噪声功率发射与几mK的温度差一致，因此呈现匹配的热负载。
英文摘要：
We report on the scattering parameters and Johnson noise emission of low-pass stripline filters employing a magnetically loaded silicone dielectric down to 25 mK. The transmission characteristic of a device with $f_{-3dB}$=1.3 GHz remains essentially unchanged upon cooling. Another device with $f_{-3dB}$=0.4 GHz, measured in its stopband, exhibits a steady state noise power emission consistent with a temperature difference of a few mK relative to a well-anchored cryogenic microwave attenuator at temperatures down to 25 mK, thus presenting a matched thermal load.
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