{"title":"用于TVRO应用的单MESFET下变频器","authors":"J. L. Cáceres, J. Perez","doi":"10.1109/MWSYM.1988.22147","DOIUrl":null,"url":null,"abstract":"A compact downconverter for use in TV receive-only (TVRO) receivers is presented. The circuit consists of an image-rejection filter and a self-oscillating mixer performing as a block which converts RF into IF signals. The downconverter's features are fully comparable to those of conventional structures, with the additional advantage that only one MESFET is required, leading to a more compact and reliable design. Average results on a band of 800 MHz (10.95-11.75 GHz with a local oscillator frequency of 10 GHz) gives a conversion gain of 4.5 dB, 8-dB single-sideband (SSB) noise figure, and more than 40-dB image rejection.<<ETX>>","PeriodicalId":339513,"journal":{"name":"1988., IEEE MTT-S International Microwave Symposium Digest","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A single MESFET down-converter for TVRO application\",\"authors\":\"J. L. Cáceres, J. Perez\",\"doi\":\"10.1109/MWSYM.1988.22147\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A compact downconverter for use in TV receive-only (TVRO) receivers is presented. The circuit consists of an image-rejection filter and a self-oscillating mixer performing as a block which converts RF into IF signals. The downconverter's features are fully comparable to those of conventional structures, with the additional advantage that only one MESFET is required, leading to a more compact and reliable design. Average results on a band of 800 MHz (10.95-11.75 GHz with a local oscillator frequency of 10 GHz) gives a conversion gain of 4.5 dB, 8-dB single-sideband (SSB) noise figure, and more than 40-dB image rejection.<<ETX>>\",\"PeriodicalId\":339513,\"journal\":{\"name\":\"1988., IEEE MTT-S International Microwave Symposium Digest\",\"volume\":\"25 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-05-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1988., IEEE MTT-S International Microwave Symposium Digest\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MWSYM.1988.22147\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1988., IEEE MTT-S International Microwave Symposium Digest","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSYM.1988.22147","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A single MESFET down-converter for TVRO application
A compact downconverter for use in TV receive-only (TVRO) receivers is presented. The circuit consists of an image-rejection filter and a self-oscillating mixer performing as a block which converts RF into IF signals. The downconverter's features are fully comparable to those of conventional structures, with the additional advantage that only one MESFET is required, leading to a more compact and reliable design. Average results on a band of 800 MHz (10.95-11.75 GHz with a local oscillator frequency of 10 GHz) gives a conversion gain of 4.5 dB, 8-dB single-sideband (SSB) noise figure, and more than 40-dB image rejection.<>
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