Question 1 (1 point) Check each true statement. Frequency in Hz (f) and angular

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Question 1 (1 point) Check each true statement. Frequency in Hz (f) and angular frequency in rads/s () are related by: w 2T f. O In amplitude modulation the amplitude of the carrier signal is varied linearly with the baseband message signal m (t) Baseband signals are used to transmit audio using radiated RF at audio frequencies. O The advantage of DSB-SC vs. AM (DSB+C) is that DSB-SC can be processed non-coherently using an envelope detector Single Sideband (SSB) modulators have a sharp (steep) transition at the carrier frequency. Save

Explanation / Answer

1. w= 2*pi*f is True.

2. Amplitude modulation is linear modulation scheme in which amplitude of carrier is varied with message signal.

3. Baseband signal are transmitted to RF Frequency for the purpose of ease of radiation and Antenna Size. THerefore the statement is true.

4. For envelop detection Modulation index should be less then 1, which is provided by Adding additional carrier amplitude which is present in DSB-C, therefore envelop detector can be used in DSB-C. Therefore statement is true.

5. SSB Modulators carries only one side band therefore which requires steep sideband for selection. Therefore statement is true.

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