Narrowband fm - PowerPoint PPT Presentation

ECE 3323 Principles of Communication Systems

ECE 3323 Principles of Communication Systems. Section 5.3 Generation of FM Signals. Narrowband FM. Narrowband FM. Narrowband FM. Narrowband FM. Narrowband FM. Phasor Representation of NBFM. Phasor Representation of NBFM. AM. Spectrum of Narrow Band FM. Spectrum of Narrow Band FM.

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EE104: Lecture 21 Outline

EE104: Lecture 21 Outline. Review of Last Lecture Vestigial Sideband Modulation AM Radio Introduction to FM FM Bandwidth and Carson’s Rule Narrowband and Wideband FM. Review of Last Lecture. Noise in AM Receivers: DSBSC Single Sideband Modulation. M(f). -B. B. LSB. USB. 0. f c.

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FM Transmitters

FM Transmitters. FCC Commercial Broadcast Specs f c : 88.1 – 107.9 Mhz , 200 kHz Spacing f c stability: +/- 2 kHz (+/-20 ppm) f m range: 50 Hz – 15 kHz (75uS pre-emphasis) D f c &lt; 75 kHz (maximum carrier deviation) 100kW max (horizontal and/or vertical polarization).

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