{"title":"Cryogenic low noise amplifier for phased array antenna","authors":"H. Kayano","doi":"10.1109/RFIT.2015.7377892","DOIUrl":null,"url":null,"abstract":"We have developed a cryogenic low noise amplifier (LNA) for phased array antenna. By using this cryogenic LNA, a low noise receiving antenna can be easily available for wireless applications such as radar systems, communication systems, and so on. In this paper, we describe an S-band cryogenic LNA with an RF interfaces having both low loss characteristic and thermal isolation characteristic. The RF interface is realized by coupling resonators with vacuum gap of 1 mm and also has narrow band characteristic. The noise temperature of the cryogenic LNA at 77 K was improved to less than 1/5 as compared with the noise temperature of the same LNA at room temperature.","PeriodicalId":422369,"journal":{"name":"2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFIT.2015.7377892","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
We have developed a cryogenic low noise amplifier (LNA) for phased array antenna. By using this cryogenic LNA, a low noise receiving antenna can be easily available for wireless applications such as radar systems, communication systems, and so on. In this paper, we describe an S-band cryogenic LNA with an RF interfaces having both low loss characteristic and thermal isolation characteristic. The RF interface is realized by coupling resonators with vacuum gap of 1 mm and also has narrow band characteristic. The noise temperature of the cryogenic LNA at 77 K was improved to less than 1/5 as compared with the noise temperature of the same LNA at room temperature.
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