Set Am to 2 and observe the resulting waveform. Could the signal be demodulated by synchronous detection? Explain.
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Step 1
This means that the amplitude of the modulating signal is increased to 2, which will affect the overall modulation depth and the characteristics of the resulting waveform. Show more…
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Step 1.11: Plot s(t) and b(t) in a single plot. (1) s(t) = s = A1*sin((2*pi*f1*t)+sphase) = 2sin(2π300t + 0) (2) b(t) = b = A2*cos((2*pi*f2*t)+bphase) = 2cos(2π300t- π/2) Question 3: Select the correct observation for s(t) and b(t) a. The plots are the same in amplitude but differ in frequency. b. The plots appear to differ in amplitude. c. The plots appear as distinct cosine and sine waves at t=0. d. Both plots appear as identical waves. Step 2.2: Plot the following equations: m(t) = 5cos(2π*500Hz*t) c(t) = 5cos(2π*10.5kHz*t) Question 4: Having made the changes, select the correct statement regarding your observation. a. The signal, s(t), faithfully represents the original message wave m(t). b. The receiver will be unable to demodulate the modulated carrier wave shown in the upper left plot. c. The AM modulated carrier shows significant signal distortion. d. Both a and b. Step 2.3: Plot the following equations: m(t) = 20cos(2π*350Hz*t) c(t) = 1cos(2π*11kHz*t) Question 5: Select the correct statement that describes what you see in the plots: a. The signal, s(t), is distorted because the AM Index value is too high. b. The modulated signal accurately represents m(t). c. Distortion is experienced because the message and carrier frequencies are too far apart from one another. d. The phase of the signal has shifted to the right because AM techniques impact phase and amplitude.
Sri K.
Andreas P.
Adi S.
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