{"title":"一个18通道，相位匹配，从30MHz到l波段的单转换上变频器","authors":"A.A. Goaaher","doi":"10.1109/EUMA.1978.332529","DOIUrl":null,"url":null,"abstract":"An 18 channel, phase-matched Upconverter has been developed by Marconi Space and Defence Systems Ltd. The Upconverter translates the 18 separate IF signals from 30MHz to L-Band while maintaining the channel phase and amplitude relationships. To ease phase tracking problems a sub-harmonically pumped mixer is used. This provides an effective LO rejection greater than 50dB and thus enables a single conversion to be used without high-order filtering. The applications and limitations of sub-harmonically pumped mixing schemes applied to upconverters are discussed.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"19 23-24 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An 18 Channel, Phase-Matched, Single-Conversion Upconverter from 30MHz to L-Band\",\"authors\":\"A.A. Goaaher\",\"doi\":\"10.1109/EUMA.1978.332529\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An 18 channel, phase-matched Upconverter has been developed by Marconi Space and Defence Systems Ltd. The Upconverter translates the 18 separate IF signals from 30MHz to L-Band while maintaining the channel phase and amplitude relationships. To ease phase tracking problems a sub-harmonically pumped mixer is used. This provides an effective LO rejection greater than 50dB and thus enables a single conversion to be used without high-order filtering. The applications and limitations of sub-harmonically pumped mixing schemes applied to upconverters are discussed.\",\"PeriodicalId\":429268,\"journal\":{\"name\":\"1978 8th European Microwave Conference\",\"volume\":\"19 23-24 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1978-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1978 8th European Microwave Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/EUMA.1978.332529\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1978 8th European Microwave Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMA.1978.332529","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An 18 Channel, Phase-Matched, Single-Conversion Upconverter from 30MHz to L-Band
An 18 channel, phase-matched Upconverter has been developed by Marconi Space and Defence Systems Ltd. The Upconverter translates the 18 separate IF signals from 30MHz to L-Band while maintaining the channel phase and amplitude relationships. To ease phase tracking problems a sub-harmonically pumped mixer is used. This provides an effective LO rejection greater than 50dB and thus enables a single conversion to be used without high-order filtering. The applications and limitations of sub-harmonically pumped mixing schemes applied to upconverters are discussed.
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