{"title":"A low-noise realtime time-domain EMI measurement system","authors":"S. Braun, A. Frech, P. Russer","doi":"10.1109/EMCZUR.2007.4388275","DOIUrl":null,"url":null,"abstract":"Time-domain EMI Measurement Systems allow to reduce the measurement time by several orders of magnitude. In this paper a realtime operating low-noise multiresolution timedomain EMI measurement system is presented. With a noise figure of about 7.5 dB and a high dynamic range emission measurements can be carried out close to the noise floor, while a high overload protection is available. A novel implementation of the 9 kHz IF-filter for the frequency 150 kHz to 1 GHz is presented. By this way the measurement time has been reduced by a factor of 8000 in comparison to conventional EMI Receivers. During emission measurements performed with a modelled IFbandwidth of 9 kHz the noise floor is decreased to -19 dμV in the average detector mode.Measurements have been performed with the improved measurement system in the frequency range 30 MHz - 1 GHz.","PeriodicalId":397061,"journal":{"name":"2007 18th International Zurich Symposium on Electromagnetic Compatibility","volume":"16 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 18th International Zurich Symposium on Electromagnetic Compatibility","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EMCZUR.2007.4388275","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
Time-domain EMI Measurement Systems allow to reduce the measurement time by several orders of magnitude. In this paper a realtime operating low-noise multiresolution timedomain EMI measurement system is presented. With a noise figure of about 7.5 dB and a high dynamic range emission measurements can be carried out close to the noise floor, while a high overload protection is available. A novel implementation of the 9 kHz IF-filter for the frequency 150 kHz to 1 GHz is presented. By this way the measurement time has been reduced by a factor of 8000 in comparison to conventional EMI Receivers. During emission measurements performed with a modelled IFbandwidth of 9 kHz the noise floor is decreased to -19 dμV in the average detector mode.Measurements have been performed with the improved measurement system in the frequency range 30 MHz - 1 GHz.
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