{"title":"利用负载调谐器提高噪声表征的准确性","authors":"G. Simpson, W. E. Pastori","doi":"10.1109/ARFTG.1989.323941","DOIUrl":null,"url":null,"abstract":"In principle, the noise figure of any microwave device is independent of load impedance; however, because of error sensitivities, a load tuner is required to achieve best noise measurement accuracy. This is because a high ouput reflection coefficient of a device under test can greatly increase the measurement receiver noise figure. This paper also presents a direct method of detecting and avoiding oscillations due to simultaneous input and output tuning.","PeriodicalId":358927,"journal":{"name":"33rd ARFTG Conference Digest","volume":"33 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Using a Load Tuner to Improve the Accuracy of Noise Characterization\",\"authors\":\"G. Simpson, W. E. Pastori\",\"doi\":\"10.1109/ARFTG.1989.323941\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In principle, the noise figure of any microwave device is independent of load impedance; however, because of error sensitivities, a load tuner is required to achieve best noise measurement accuracy. This is because a high ouput reflection coefficient of a device under test can greatly increase the measurement receiver noise figure. This paper also presents a direct method of detecting and avoiding oscillations due to simultaneous input and output tuning.\",\"PeriodicalId\":358927,\"journal\":{\"name\":\"33rd ARFTG Conference Digest\",\"volume\":\"33 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"33rd ARFTG Conference Digest\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ARFTG.1989.323941\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"33rd ARFTG Conference Digest","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ARFTG.1989.323941","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Using a Load Tuner to Improve the Accuracy of Noise Characterization
In principle, the noise figure of any microwave device is independent of load impedance; however, because of error sensitivities, a load tuner is required to achieve best noise measurement accuracy. This is because a high ouput reflection coefficient of a device under test can greatly increase the measurement receiver noise figure. This paper also presents a direct method of detecting and avoiding oscillations due to simultaneous input and output tuning.
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