Fm demodulator circuit

1. What circuit is used for FM demodulation?
2. How is FM demodulation?
3. How do you demodulate an FM waveform?
4. What are the requirements of FM demodulator?

What circuit is used for FM demodulation?

The FM demodulator is done with the help of a circuit called Phase Locked Loop (PLL). A PLL should have basic functional blocks like Voltage Controlled Oscillator (VCO), Phase comparator, Low Pass Filter (LPF) and Source follower.

How is FM demodulation?

FM demodulation is a key process in the reception of a frequency modulated signal. Once the signal has been received, filtered and amplified, it is necessary to recover the original modulation from the carrier. It is this process that is called demodulation or detection.

How do you demodulate an FM waveform?

A simple and effective FM demodulation technique involves a high-pass filter (for FM-to-AM conversion) followed by an AM demodulator. A high-pass-filter-based FM demodulator is preceded by a limiter to prevent amplitude variations from contributing error to the demodulated signal.

What are the requirements of FM demodulator?

The FM demodulator must satisfy the following requirements: (i) It must convert frequency variations into amplitude variations. (ii) This conversion must be linear and efficient. (iii) The demodulator circuit should be insensitive to amplitude changes. It should respond only to the frequency changes.