# HW6 - ECE200 1 Given Homework#6 Due July 15 v(t =[8 15 cos...

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ECE200 Homework #6 Due: July 15 1. Given: V )] 2 / 15000 2 cos( 8 ) 3 / 750 2 cos( 10 ) 6 / 250 2 cos( 15 8 [ ) ( p p p p p p + + + + - - - = t t t t v a. Plot the magnitude spectrum of v(t). b. Plot the phase spectrum of v(t). c. Plot the power spectrum in dBW. d. Find the power in the 2 nd harmonic in Watts. e. Find the power in the 3 rd harmonic in Watts. f. Find the total signal power in dBW. g. Calculate the power this signal would deliver to a 5K resistor. h. Determine the noise power in Watts if the SNR for this signal plus noise is 40dB. 2. a. What is the noise power in Watts if the signal-to-noise ratio of the CD player is 100 dB and the signal power is 1 W? b. Given v(t) = [-8 + 6cos(2pi250t + pi/2) – 5cos(2pi500t) – 3cos(2 pi1000t – pi/4)] Volts. What is the total signal power in dBW ? c. An amplifier is used to increase the strength of a signal, Vout = (Amplification)*(Vin). Calculate the power gain in dB if the voltage amplification is 1000. 3.

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HW6 - ECE200 1 Given Homework#6 Due July 15 v(t =[8 15 cos...

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