Instructions for Frequency Modulation (FM)

Step 1: Click on 'Generate Message' button to generate input message signal
Step 2: Then click on 'Generate Carrier' button to generate carrier signal. The carrier frequency has to be more than the message frequency and You can change frequencies using sliders
Step 3: Click on 'Generate Frequency Modulated Signal' button to generate Frequency Modulated Signal
Step 4: Click the 'Show Frequency Spectrums' button to view the FM spectra.
Here, β represents the frequency modulation index, given by β = kf*Am/fm, where Am is the amplitude of the message signal (assumed to be fixed), fm is its frequency, and kf is the frequency sensitivity

1Hz

Step 1:

10Hz

Step 2:

Kf (frequency sensitivity):

Step 3:

Step 4:

Frequency Demodulation

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Simulations

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Frequency Demodulation Simulation