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FM Modulation and Demodulation

The example, shows how the FM Modulator Baseband and FM Demodulator Baseband blocks are used to modulate and demodulate a sinusoidal signal.

To run the model, open the example by entering fmmoddemod at the MATLAB® command prompt.

The input data is a sine wave of frequency 4 Hz and amplitude 1 V. The frequency deviation is set to 50 Hz. The Modulated Signal scope illustrates that the frequency of the modulator output, Mod Sig, varies with the amplitude of the input data.

The Demodulated Signal scope demonstrates that the output of the demodulator, Demod Sig, is perfectly aligned with the input data.