The electromagnetic wave radiated from an antenna of resistance 151 ohms is denoted by the expression S(t) = Vc(1+Vm sin2 Tt fmt) sin2 Ttfct; where Vm = 4.5 V, Vc = 20.5 V, fm= 97KHZ and fc = 56MHZ. Find () the expression for the message signal ( (11) the expression for the carrier ( (iI) Draw its spectrum and find the sidebands (3

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The electromagnetic wave radiated from an antenna of resistance 151 ohms is denoted by the expression S(t) = Vc(1+Vm sin2 TE fmt) sin2 Tfct; where Vm = 4.5 V, Vc = 20.5 V,
fm= 97KHZ and fc = 56MHZ. Find
() the expression for the message signal (
(1) the expression for the carrier
(ii) Draw its spectrum and find the sidebands (
Transcribed Image Text:The electromagnetic wave radiated from an antenna of resistance 151 ohms is denoted by the expression S(t) = Vc(1+Vm sin2 TE fmt) sin2 Tfct; where Vm = 4.5 V, Vc = 20.5 V, fm= 97KHZ and fc = 56MHZ. Find () the expression for the message signal ( (1) the expression for the carrier (ii) Draw its spectrum and find the sidebands (
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