To Study FM- Demodulation and to Observe the Demodulated Wave Characteristics.
Demodulation is the act of extracting the original information- bearing signal from a modulated carrier wave or the process of separating the original information or signal from the modulated carrier wave. This process is used in the receivers to recover the original signal coming from the sender end n modulating form. We can say that its function is opposite to that of modulation process. There are several ways to demodulation depending upon how parameters of the base-band signal are transmitted in the carrier signal, such as amplitude, frequency or phase. For a signal modulated with a linear modulation, like Amplitude modulation we can use a synchronous detector, for a signal modulated with an angular modulation use a Frequency demodulator.
There are several common types of FM demodulation,some of them are: