Self-synchronization circuit for a FFSK or MSK demodulator

摘要: The self-synchronization circuit splits the incoming signal into two paths where signals are frequency shifted by a equal to carrier so as provide an in-phase in one path and quadrature other path. shifting includes at least controllable oscillator. output of first multiplier which multiplies signals, is fed clock recovery determines frequency. A second with controls In addition, discriminator utilizes initially coarse control oscillator may be obtained from feeding phase circuits, or they combined including fixed circuits together appropriate mixing circuits.