窄带和宽带频率调制频谱特性和带宽计算

IEEE Potentials Pub Date : 2023-01-01 DOI:10.1109/MPOT.2012.2187489

A. Alaa

{"title":"窄带和宽带频率调制频谱特性和带宽计算","authors":"A. Alaa","doi":"10.1109/MPOT.2012.2187489","DOIUrl":null,"url":null,"abstract":"Frequency modulation (FM) is a class of analog modulation techniques that rely on varying the instantaneous frequency of a radio-frequency (RF) carrier in accordance with the baseband signal. The amplitude of the FM signal is constant, while its instantaneous frequency is time variant; therefore, the zero crossing rate (ZCR) of the carrier differs at a rate proportional to the Nyquist rate of the baseband signal. Unlike amplitude modulation (AM), FM is a nonlinear modulation technique; therefore, the calculation of the spectrum of an FM signal is expected to be a tedious mathematical problem.","PeriodicalId":39514,"journal":{"name":"IEEE Potentials","volume":"42 1","pages":"44-48"},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Narrowband and wideband frequency modulation spectral characterization and bandwidth calculation\",\"authors\":\"A. Alaa\",\"doi\":\"10.1109/MPOT.2012.2187489\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Frequency modulation (FM) is a class of analog modulation techniques that rely on varying the instantaneous frequency of a radio-frequency (RF) carrier in accordance with the baseband signal. The amplitude of the FM signal is constant, while its instantaneous frequency is time variant; therefore, the zero crossing rate (ZCR) of the carrier differs at a rate proportional to the Nyquist rate of the baseband signal. Unlike amplitude modulation (AM), FM is a nonlinear modulation technique; therefore, the calculation of the spectrum of an FM signal is expected to be a tedious mathematical problem.\",\"PeriodicalId\":39514,\"journal\":{\"name\":\"IEEE Potentials\",\"volume\":\"42 1\",\"pages\":\"44-48\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Potentials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MPOT.2012.2187489\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Potentials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MPOT.2012.2187489","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

摘要

调频（FM）是一类模拟调制技术，它依赖于根据基带信号改变射频（RF）载波的瞬时频率。调频信号的振幅是恒定的，而其瞬时频率是时变的；因此，载波的过零率（ZCR）以与基带信号的奈奎斯特率成比例的速率不同。与调幅（AM）不同，调频是一种非线性调制技术；因此，FM信号频谱的计算预计将是一个乏味的数学问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Narrowband and wideband frequency modulation spectral characterization and bandwidth calculation

Frequency modulation (FM) is a class of analog modulation techniques that rely on varying the instantaneous frequency of a radio-frequency (RF) carrier in accordance with the baseband signal. The amplitude of the FM signal is constant, while its instantaneous frequency is time variant; therefore, the zero crossing rate (ZCR) of the carrier differs at a rate proportional to the Nyquist rate of the baseband signal. Unlike amplitude modulation (AM), FM is a nonlinear modulation technique; therefore, the calculation of the spectrum of an FM signal is expected to be a tedious mathematical problem.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IEEE Potentials Social Sciences-Education

CiteScore

1.40

自引率

0.00%

发文量

期刊介绍： IEEE Potentials is the magazine dedicated to undergraduate and graduate students and young professionals. IEEE Potentials explores career strategies, the latest in research, and important technical developments. Through its articles, it also relates theories to practical applications, highlights technology?s global impact and generates international forums that foster the sharing of diverse ideas about the profession.