{"title":"Cusp gun TE/sub 21/ second-harmonic gyro-TWT amplifier","authors":"S. Harriet, D. Mcdermott, N. Luhmann","doi":"10.1109/ICIMW.2002.1076157","DOIUrl":null,"url":null,"abstract":"A second harmonic cusp-gun TE/sub 21/ gyro-TWT amplifier is being constructed at UCD that is predicted to generate 50 kW at 30 GHz with 20% efficiency, 30 dB saturated gain and 3% bandwidth. The device is to be driven by a 70 kV, 3.5 A axis-encircling electron beam from a Northrop Grumman cusp gun. The device takes advantage of the concept that harmonic gyro-TWT's are more stable and can produce higher power than at the fundamental-harmonic, because their weaker interaction yields a higher threshold electron current for the absolute instability at the cutoff of the operating mode.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Twenty Seventh International Conference on Infrared and Millimeter Waves","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICIMW.2002.1076157","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A second harmonic cusp-gun TE/sub 21/ gyro-TWT amplifier is being constructed at UCD that is predicted to generate 50 kW at 30 GHz with 20% efficiency, 30 dB saturated gain and 3% bandwidth. The device is to be driven by a 70 kV, 3.5 A axis-encircling electron beam from a Northrop Grumman cusp gun. The device takes advantage of the concept that harmonic gyro-TWT's are more stable and can produce higher power than at the fundamental-harmonic, because their weaker interaction yields a higher threshold electron current for the absolute instability at the cutoff of the operating mode.
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