Ultra-low noise, temperature compensated amplifier characterization with cryogenic load

被引：0
|
作者：
Gonzalez, Manuel [1 ]
Prele, Damien [1 ]
Chen, Si [1 ]
机构：
[1] Univ Paris Cite, CNRS, Astroparticule & Cosmol, F-75013 Paris, France
来源：
2022 IEEE 15TH WORKSHOP ON LOW TEMPERATURE ELECTRONICS (WOLTE 2022) | 2022年
关键词：
LNA; low thermal drift; cryogenic load; SQUID readout;
D O I：
10.1109/WOLTE55422.2022.9882863
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present the characterization of an ultra-low noise, temperature compensated amplifier, designed for superconducting quantum interference devices (SQUID) readout. A cryogenic input load was used to emulate the output impedance of the SQUID and to perform the noise characterization of the LNA in input matched condition. White noise levels below 0.5nV/root Hz were measured for this room temperature LNA. The temperature compensation design of the LNA was also tested by measuring the linearity and frequency response of the LNA cooled down to 77K. We obtain identical gain and bandwidth, showing an excellent rejection of thermal drift up to more than 20MHz.
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页数：4
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