Question:
To transmit a signal of frequency, $\omega_m$, with a carrier frequency, $\omega_c$, in AM transmission, the bandwidth of the filter and amplifier is
To transmit a signal of frequency, $\omega_m$, with a carrier frequency, $\omega_c$, in AM transmission, the bandwidth of the filter and amplifier is
Show Hint
AM bandwidth is twice the modulating frequency.
Updated On: May 1, 2026
- $\omega_m$
- $2\omega_m$
- $\omega_c$
- $\omega_c - \omega_m$
- $\omega_c + \omega_m$
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The Correct Option is B
Solution and Explanation
Concept:
AM signal contains:
• Upper sideband: $\omega_c + \omega_m$
• Lower sideband: $\omega_c - \omega_m$
Step 1: Bandwidth definition.
\[ \text{Bandwidth} = (\omega_c + \omega_m) - (\omega_c - \omega_m) \]
Step 2: Simplify.
\[ = 2\omega_m \]
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