Question
1)Given the following message, m(t), carrier, c(t), and Kvco=4500(Hz/v), determine the FM modulated signal equation and FM index. m(t)=2cos(23500t), c(t)=4cos(25MHzt). a. s(t)=2cos(25E6t + 1.56sin(23500t)), =1.56
1)Given the following message, m(t), carrier, c(t), and Kvco=4500(Hz/v), determine the FM modulated signal equation and FM index. m(t)=2cos(23500t), c(t)=4cos(25MHzt).
a. s(t)=2cos(25E6t + 1.56sin(23500t)), =1.56
b. s(t)=2cos(23500t + 1.56sin(25E6t)), =1.56
c. s(t)=4cos(25E6t + 2.57sin(23500t)), =2.57
d. s(t)=4cos(23500t + 2.57sin(25MHz*t)), =2.57
2)Given the following message, m(t), carrier, c(t), and Kp=0.2(rad/v), determine the PM modulated signal equation. m(t)=3cos(24000t), c(t)=4cos(26E6t).
a. s(t)=4cos(26E6t + 0.6cos(24000t))
b. s(t)=4cos(24000t + 0.6cos(24E6t))
c. s(t)=3cos(26E6t + 0.6cos(23500t))
d. s(t)=3cos(24000t + 0.6cos(24kHz*t))
3)Given the following parameters, select the correct equation for the modulated carrier signal. Am=3v, Ac=3v, fm=5500Hz, fc=100MHz, m=0, c=0
a. s(t) = 3[1+1.08 cos(25500t)] cos(2100E6t)
b.s(t) = 3[1+1cos(25500t)] cos(2100E6t)
c.s(t) = 3[1+6.5 cos(23500t)] cos(2100t)
d. s(t) = 6.5[1+0.93 cos(2100t)] cos(2100E3t)
4)Determine your FM bandwidth given the following: FM Index =3.9, frequency of your message is fm=3690Hz.
a. 36.2 kHz
b. 3.62 kHz
c. 1.8E4 Hz
d. 28 kHz
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