AER715 - Lab1 - Worksheet1

Describe the importance of using Bandpass filters in BFSK noncoherent demodulator.

In three-level PWM, the modulating process operates on each portion of the modulating function separately. The output peak value is still given by the depth of modulation, but the RMS value of the square wave is not Vin. Compute the THD for three-level PWM as a function of the depth of modulation (modulation index k).

2. Determine the peak phase deviation and modulation index for a PM modulator with a deviation sensitivity K = 2.5 rad/V and a modulating signal v(t) = 2 cos (212000t). %3D

For the filter: a) Determine type of filter and the cut-off frequency (Fc). Determine the peak voltage at the cut-off frequency (Fc). b) Find GAIN (Vo/Vi) at f = .1*Fc . Find GAIN (Vo/Vi) at f = 10*Fc . c) Determine the frequency at which GAIN = .4 (i.e., Vo = .4*Vi) . Draw the “Frequency Response Plot” in “Log-Log” format .

What is the graph of the FM and PM magnitude spectrum with sine modulation?

Find the mathematical expression for the points 1 and 2 for this pratical AM-DSB/SC modulator

8. Determine: a) Noise Figure for an equivalent noise temperature of 75K. d) Equivalent noise temperature for a noise figure of 6dB.

I need proper solution for the following( underdstandable writing and well explained) thank you  What is resonance in LCR circuit? and tell the difference between impedance and resistance?

Determine modulation index for a frequency modulator with a deviation sensitivity of 20 kHz/V and a modulating signal of 5cos 2π(2500)t