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Unformatted text preview:0.67cos(273E6t) cos(274kHz*t) d. s(t)=2[1 + 1.5cos(2173MHz*t)]cos(2174000t) QUESTION 21 Given the following FM modulated signal equation, determine the frequency bandwidth. s(t)=2cos(211E9t + 4sin(211 E3t)) a. 20kHz b. 10kHz C. 1kHz d. 106 kHz QUESTION 22 Given the following message, m(t), carrier, c(t), and Kp=0.1(rad/V), determine the PM modulated signal equation and PM index. m(t)=2cos(274000t), c(t)=4cos(2118MHzt). a. s(t)=4cos(2714E61 +0.75cos(2173500t)), HPM=0.75 b. s(t)=4c0s(2778E6t + 0.2cos(2174E3t)), HPM=0.2 C. s(t)=3cos(2714E6t +0.75cos(2173500t)). HPM=0.75 d. s(t)=4cos(2174000t +0.2cos(2178E6t)), UPM=0.2 QUESTION 23 Given the following PM modulated signal equation, determine the original message equation, m(t). s(t)=3.2cos(2172 E9t +0.99cos(2175000t)), Kp=0.33 (Hz/v) a. m(t)= 4.4cos(2775000t) b. m(t)= 4.4cos(2172E9t) c. m(t)= 3Cos(2775000t) d. m(t)= 3.2cos(212E9t) QUESTION 24 Given the following PM modulated signal equation, determine the frequency bandwidth. s(t)=3cos(213E9t + 2 cos(21713E3t)) a. 22kHz 40kHz c. 78 kHz d. 116 kHz