QUESTION 36 The frequency bandwidth for an AM modulated signal where fm-4000Hz i

Question

QUESTION 36 The frequency bandwidth for an AM modulated signal where fm-4000Hz is approximately a. fm4000 Hz b. 2fm 4000 Hz c. 2fm 8000 Hz d. 4fm" 16,000 Hz QUESTION 37 Since message waves such as voice represents information in the form of changing amplitudes, message amplitudes must be converted into carrier frequency changes when using FM techniques. Kvco represents the voltage-controlled oscillator that converts amplitude changes into frequency changes, and is given in units of Hz per volts True False

Explanation / Answer

Question 36)

The frequency bandwidth for an AM modulated signal where fm = 4000 Hz is approximately

c) 2fm = 8000 Hz

The bandwidth of an AM signal is double the fmax value modulated onto the carrier.

Question 37)

- True

Voltage Controlled Oscillators (KVCO) converts amplitude changes into frequency changes and is measured in Hz/volts.

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