Page 106 - Phase-Locked Loops Design, Simulation, and Applications
P. 106

Phase detector type 4a. The waveforms for         and  ω ′ versus time for the PFD are
                                                                         2
               shown in  Fig. 3.13. Again, the frequency of the VCO  output signal is modulated in a
               sawtooth-like manner. Analogous to the preceding sections (EXOR



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