{"title":"Armstrong's Frequency Modulator","authors":"D. L. Jaffe","doi":"10.1109/JRPROC.1938.228196","DOIUrl":null,"url":null,"abstract":"When the side bands of an amplitude-modulated signal are shifted 90 degrees and then recombined with the carrier, a frequency-modulated carrier results. In this paper the order and magnitudes of the distortion components of such a frequency-modulated carrier are quantitatively determined assuming an idealized receiver. It is found that this type of distortion will be negligibly small after frequency multiplication to obtain the desired carrier frequency.","PeriodicalId":54574,"journal":{"name":"Proceedings of the Institute of Radio Engineers","volume":"26 1","pages":"475-481"},"PeriodicalIF":0.0000,"publicationDate":"1938-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JRPROC.1938.228196","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institute of Radio Engineers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/JRPROC.1938.228196","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
When the side bands of an amplitude-modulated signal are shifted 90 degrees and then recombined with the carrier, a frequency-modulated carrier results. In this paper the order and magnitudes of the distortion components of such a frequency-modulated carrier are quantitatively determined assuming an idealized receiver. It is found that this type of distortion will be negligibly small after frequency multiplication to obtain the desired carrier frequency.
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