{"title":"防止耦合腔行波管杂散振荡的新方法","authors":"G. Busacca, V. Meli, M. Spalla","doi":"10.1109/EUMA.1986.334190","DOIUrl":null,"url":null,"abstract":"Self- and drive induced oscillations are prevented in Coupled Cavity Power Travelling Wave Tube Amplifiers (TWTA's) by introducing frequency dependent R.F. losses at the upper cutoff. This paper describes a new method to realize the requested lossed by means of the cutoff properties of loaded waveguides coupled to the circuit. The losses introduced do not interfere in the working band, so that the tube efficiency and gain are not affected. A Coupled Cavity R.F. circuit is designed according to this method with the aim to obtain stable operations in a 400 MHz hot band at 3 GHz. Experimental results showed excellent stability with 50 dB saturated gain","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A New Method to Prevent Spurious Oscillations in Coupled Cavity TWT's\",\"authors\":\"G. Busacca, V. Meli, M. Spalla\",\"doi\":\"10.1109/EUMA.1986.334190\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Self- and drive induced oscillations are prevented in Coupled Cavity Power Travelling Wave Tube Amplifiers (TWTA's) by introducing frequency dependent R.F. losses at the upper cutoff. This paper describes a new method to realize the requested lossed by means of the cutoff properties of loaded waveguides coupled to the circuit. The losses introduced do not interfere in the working band, so that the tube efficiency and gain are not affected. A Coupled Cavity R.F. circuit is designed according to this method with the aim to obtain stable operations in a 400 MHz hot band at 3 GHz. Experimental results showed excellent stability with 50 dB saturated gain\",\"PeriodicalId\":227595,\"journal\":{\"name\":\"1986 16th European Microwave Conference\",\"volume\":\"33 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1986-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1986 16th European Microwave Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/EUMA.1986.334190\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1986 16th European Microwave Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMA.1986.334190","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
摘要
在耦合腔功率行波管放大器(TWTA’s)中，通过在上截止点引入频率相关的射频损耗来防止自激和驱动诱导振荡。本文介绍了一种利用加载波导耦合电路的截止特性来实现所要求的损耗的新方法。引入的损耗不会干扰工作频带，因此不影响管的效率和增益。根据这种方法设计了一个耦合腔射频电路，目的是在3ghz的400 MHz热带中获得稳定的工作。实验结果表明，该系统具有良好的稳定性，饱和增益为50 dB
A New Method to Prevent Spurious Oscillations in Coupled Cavity TWT's
Self- and drive induced oscillations are prevented in Coupled Cavity Power Travelling Wave Tube Amplifiers (TWTA's) by introducing frequency dependent R.F. losses at the upper cutoff. This paper describes a new method to realize the requested lossed by means of the cutoff properties of loaded waveguides coupled to the circuit. The losses introduced do not interfere in the working band, so that the tube efficiency and gain are not affected. A Coupled Cavity R.F. circuit is designed according to this method with the aim to obtain stable operations in a 400 MHz hot band at 3 GHz. Experimental results showed excellent stability with 50 dB saturated gain
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