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how equation 15.3 has derived please help me
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Asked by Prashant DIGHE | 16 Mar, 2020, 22:23: PM
answered-by-expert Expert Answer
Carrier wave, c(t) = Ac sin( ωc t )  ............... (1)
 
Modulating signal, m(t) = Am sin (ωm t ) ................(2)
 
After modulation, amplitude of modulated signal is sum of amplitude Ac of carrier wave and modulating signal m(t)
 
Hence modulated carrier wave,  cm (t) = [ Ac + Am sin( ωmt ) ] sin ( ωct ) .................(3)
 
Eqn.(3) is rewritten as,  cm (t) = Ac [ 1 +( Am / Ac ) sin( ωmt ) ] sin ( ωct ) .................(4)
Answered by Thiyagarajan K | 17 Mar, 2020, 12:34: PM

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