P. Piironen, J. Mallat, A. Rasanen, E. Siivola, J. Takala, P. Jukkala, P. Sailamaki, H. Somerma, J. Ylinen
{"title":"Space Qualification of the Radioastron 22 GHz Receiver","authors":"P. Piironen, J. Mallat, A. Rasanen, E. Siivola, J. Takala, P. Jukkala, P. Sailamaki, H. Somerma, J. Ylinen","doi":"10.1109/EUMA.1992.335685","DOIUrl":null,"url":null,"abstract":"The Radioastron space VLBI satellite, expected to be launched in 1995, will have on board four sensitive two-channel radiometers. Finland is responsible for the 22 GHz receiver. The most important properties of the receiver are sensitivity, phase stability and gain stability. To reach maximum sensitivity, a modern space qualified low noise HEMT amplifier has been designed. The measured receiver noise temperature is 140 K. For maximum phase and amplitude stabilities, temperature stabilisation and a high Q dielectric resonator oscillator design have been utilized. The measured phase stability is better than 3 o/h. The main aspects of the space qualification tests and the reliability analysis are described.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"174 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1992 22nd European Microwave Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMA.1992.335685","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The Radioastron space VLBI satellite, expected to be launched in 1995, will have on board four sensitive two-channel radiometers. Finland is responsible for the 22 GHz receiver. The most important properties of the receiver are sensitivity, phase stability and gain stability. To reach maximum sensitivity, a modern space qualified low noise HEMT amplifier has been designed. The measured receiver noise temperature is 140 K. For maximum phase and amplitude stabilities, temperature stabilisation and a high Q dielectric resonator oscillator design have been utilized. The measured phase stability is better than 3 o/h. The main aspects of the space qualification tests and the reliability analysis are described.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
