Question

m(t) = B sinc2tlbt) B = 100 o Wc=10000 lt ♡ Find spectrum mct) and DSB-SC->2m (t) cos(wet) ③ Drawing Phase shift digram of LSB QCt). © Find spectrum QLS BCF) · D Find als B (t) expression in time domain.

I want the right solution please

Answer 1

Given -that = B sin (2 TI Bt ) mit) B = lo00 lo00n t mct) = lo0o sin(291frmt) = lo00 STo (2h 100ot) fm = 1000 fc = l000 ; , B= 1000 1o09 - 1000 fm = 1000H3 speetrum of mct) mct) = 100o sin (271 fmt) l000 s (f-fm) sou [Scrafm) + scstém)] MCS) frm - fm -lo00 1000

A DSB-SC Slt) = 2mCt) cosuele) Ac=2 - (o00 phase revens al īs heippen Act Am-lo Ac- Am = 998 Slt) = met) cet) = Occos 2nfct m(t) sct) S4) = AcAm cas2 Tifct coSLTifmt COSA COS B = COLA-B) + cos(AFB) AMAC Sit) = coszti (fc-fmJt t AmAC cas 2n (fct fm]{ Time Domain equation for DSB -SC : SLt) = AMAC cos 2n (fc-f m)t +AMAC caszn Cfc tfm)€ fetfm) usB fc-fm LSB Oppen Side (osen Side Band Band

time pomain is so QUB(t) expression QiUB)= lo00 cosZTi Cfc-1000lt slt) = AmAC In orden to trainsf er to frequency the time domain domain ap ply the Jourier transfor m to the above Sit) eaiocetion AmAc [scE-cre-fm)] + $ Cof tEct fm))] + SCf) = sce) = 2x1000 [s cr.fe-fm))+ o (ft (fc-fm)) ]+ cr t(= =Fm]] + i. s00 [s Cs-(se -fm) SCH) =

Spectrom SC) fctafm - fet.fnd feafm fc 500 -SeHoo0 fc-l000 Sc -fc Rl000 e fct1000 Spectrum of QISB(4) -fetlool -Sc-loo0 Sc
upvote if it is helpful to you please