- 2 A 10 Khz Cosine Carrier Signal With 5 Volts Amplitude Is Frequency Modulated By The Periodic Message Signal Shown In 1 (221.44 KiB) Viewed 42 times
2. A 10 KHz cosine carrier signal with 5 volts amplitude is frequency modulated by the periodic message signal shown in
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2. A 10 KHz cosine carrier signal with 5 volts amplitude is frequency modulated by the periodic message signal shown in
2. A 10 KHz cosine carrier signal with 5 volts amplitude is frequency modulated by the periodic message signal shown in Figure 1 to generate an FM signal with a peak phase deviation of 107 radians. (a) Determine the frequency sensitivity kf in Hz/volt. (5 Marks) (b) Sketch the instantaneous frequency deviation of the FM signal. Indicate all relevant time and amplitude information in your sketch. (3 Marks) (c) Sketch the instantaneous phase deviation of the FM signal. Indicate all relevant time and amplitude information in your sketch. (6 Marks) (d) Sketch 2 cycles of the time waveform of the FM signal. State clearly the important time, amplitude and frequency information. (6 Marks) (e) The same carrier signal and message signal now generate a phase-modulated (PM) signal with a peak phase deviation of a/2 radians. Sketch 2 cycles of the time waveform of this PM signal. State clearly the important time, amplitude and frequency information. (5 Marks) m(t) (volt) 山田 t(second) → T=2 Figure 1
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