chapter 7 - angle modulation transmission.pptx

7/24/2019 chapter 7 - ANGLE MODULATION TRANSMISSION.pptx

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ANGLE MODULATION

TRANSMISSION


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- Modulating signal


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FM PM


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Phase and Frequency Modulators and Demodulators

Phase Modulator circuit that aries the carrier in such a !a" that its instantan#hase is #ro#ortional to the $odulating signal

rest %re&uenc" un$odulated carrier !ith a single %re&uenc"

're&uenc" $odulator or %re&uenc" deiator- circuit that aries the carrier in such a !a" that its instantaneous %re& is

#ro#ortional to the integral o% the $odulating signal

d(dt'M

$odulator

Phase $odulator'M

de$odulator

Phase de$odulator

'M Modulator

PM$odulator

PMde$odulat

or

'M de$odulator

d(dt


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carrier null alue o% $ !hen the ) is *ero


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chapter 7 - angle modulation transmission.pptx

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