{"title":"低温负载下的超低噪声、温度补偿放大器特性","authors":"Manuel González, D. PRELE, Si Chen","doi":"10.1109/WOLTE55422.2022.9882863","DOIUrl":null,"url":null,"abstract":"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 $0.5\\, \\text{nV} /\\sqrt {\\text{Hz}}$ 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.","PeriodicalId":299229,"journal":{"name":"2022 IEEE 15th Workshop on Low Temperature Electronics (WOLTE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ultra-low noise, temperature compensated amplifier characterization with cryogenic load\",\"authors\":\"Manuel González, D. PRELE, Si Chen\",\"doi\":\"10.1109/WOLTE55422.2022.9882863\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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 $0.5\\\\, \\\\text{nV} /\\\\sqrt {\\\\text{Hz}}$ 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.\",\"PeriodicalId\":299229,\"journal\":{\"name\":\"2022 IEEE 15th Workshop on Low Temperature Electronics (WOLTE)\",\"volume\":\"29 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2022 IEEE 15th Workshop on Low Temperature Electronics (WOLTE)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/WOLTE55422.2022.9882863\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE 15th Workshop on Low Temperature Electronics (WOLTE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WOLTE55422.2022.9882863","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Ultra-low noise, temperature compensated amplifier characterization with cryogenic load
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 $0.5\, \text{nV} /\sqrt {\text{Hz}}$ 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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