{"title":"Multimode injected-beam crossed-field amplifier for coherent airborne radar","authors":"G. Groshart, R. Moats","doi":"10.1109/IEDM.1980.189785","DOIUrl":null,"url":null,"abstract":"Injected-beam crossed-field amplifiers (IBCFAs) are admirably suited for multimode transmitting amplifiers because beam current can be continuously varied from zero to maximum with good beam focusing and with high efficiency over a substantial range of beam currents. The range of pulse-up while maintaining high efficiency can be greatly extended by changing magnetic field levels and applied voltages at the same time. Further improvement in pulse-up operation is made possible by depressed collector techniques. Measurements of IBCFAs designed for 10 dB pulse-up in X-Band from 1.5 to 15 kW peak power output over a 10% bandwidth with low phase noise are presented, including the effects of the depressed collector and magnetic field switching.","PeriodicalId":180541,"journal":{"name":"1980 International Electron Devices Meeting","volume":"5 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1980 International Electron Devices Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEDM.1980.189785","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
Injected-beam crossed-field amplifiers (IBCFAs) are admirably suited for multimode transmitting amplifiers because beam current can be continuously varied from zero to maximum with good beam focusing and with high efficiency over a substantial range of beam currents. The range of pulse-up while maintaining high efficiency can be greatly extended by changing magnetic field levels and applied voltages at the same time. Further improvement in pulse-up operation is made possible by depressed collector techniques. Measurements of IBCFAs designed for 10 dB pulse-up in X-Band from 1.5 to 15 kW peak power output over a 10% bandwidth with low phase noise are presented, including the effects of the depressed collector and magnetic field switching.
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