Thus, both low-frequency and high-frequency signals are filtered out by the circuit . This is why this circuit is a band-pass filter. A commonly used FM demodulator is the so-called balanced discriminator. The circuit is given in Figure 4-23(a).
|Author||:||Richard Chia Tung Lee, Mao-Ching Chiu, Jung-Shan Lin|
|Publisher||:||John Wiley & Sons - 2008-04-15|