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Which parts of a sinusoidal carrier can be modulated?(a) only amplitude(b) only frequency(c) its amplitude, frequency and direction(d) its amplitude, frequency and phase angleThe question was posed to me during an interview.The question is from PWM topic in division Phase Locked Loop & Pulse Modulation of Analog Communications |
Answer» RIGHT CHOICE is (d) its amplitude, FREQUENCY and phase angle Easy explanation: If the carrier wave is SINUSOIDAL, then we can vary its amplitude, frequency, and phase in PROPORTION with the wave which is transmitted. |
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