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    FM demodulator methods?

    hello

    what are the FM demodulator methods?(for voice or FSK data)

    Can you send some links or pdfs?

    •   Alt10th May 2007, 19:10

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    •   Alt11th May 2007, 14:21

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    Re: FM demodulator methods?

    There are several standard methods.

    PLL works best at low SNRs

    Phase shift and multiply by the original signal. The shift can be done with a LC network or a delay line.

    Pulse counting is the most linear but requires very high SNR. The RF cycles trigger a fixed duration monostable and the output is low pass filtered.

    Then there are the LC networks with diodes used in the early days.



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