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Module 1: Analog Modulation

20247m

Compare Amplitude Modulation (AM) and Frequency Modulation (FM) in terms of bandwidth, power efficiency, and noise immunity.

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AM vs FM: AM BW 2fm2f_m narrow, power 33% max carrier wasteful, noise poor envelope. FM BW 2(Δf+fm)2(\Delta f+f_m) wide, constant envelope efficient, capture effect, high noise immunity ~10dB better, complex VCO/discriminator. FM for VHF high fidelity, AM MW simple.

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