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| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Consider the frequency demodulation scheme shown in Fig. 4.20 in which the incoming FM wave s(t) is passed through a delay line that produces a phase shift –π/2 of radians at the carrier frequency The delay-line output is subtracted from and the resulting composite wave is then envelope-detected. This demodulator finds application in demodulating FM waves at microwave frequencies. Assuming that
Â
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analyze the operation of this demodulator when the modulation index is less than unity and the delay T produced by the delay line is sufficiently small to justify making the approximations:

Â
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