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What will be the upper sideband and lower sideband frequencies for amplitude modulation of a 5-kHz signal with 40-kHz carrier frequency?

What will be the upper sideband and lower sideband frequencies for amplitude modulation of a 5-kHz signal with 40-kHz carrier frequency? Correct Answer 45 kHz and 35 kHz, respectively

Concept:

An amplitude modulation spectrum is represented as:

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fc = Carrier Frequency

fm = Signal frequency

fc + fm = Upper Sideband

fc - fm = Lower Sideband

Analysis:

Given fc = 40 kHz and fm = 5 kHz

The upper and lower sidebands after Amplitude modulation will be:

Upper Sideband = fc + fm = 40 + 5 kHz = 45 kHz

Lower Sideband = fc - fm = 40 - 5 kHz = 35 kHz

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