Hybrid Design of Phase Frequency Detector Applied in Phase Locked Loop to Eliminate Dead and Blind Zones
F. Sh. Khalifa, Hamid R. Alsanad, Ahmed Shakir Al‐Hiti, Yousif Al Mashhadany, Takialddin Al Smadi
Abstract
This paper presents a hybrid design and simulation of a Phase Frequency Detector (PFD) which eliminates the effects of the blind and the dead zones for a charge-pump phase-locked loop (CP_PLL). These parameters limit the detection range of the PLL since they occur at zero and 2π phase differences respectively. Two XOR gates have been added to the conventional D-Flip-flop PFD to eliminate both parameters simultaneously. The proposed system has been simulated using Multisim 14.3 and tested using a 10 MHz input frequency. The simulation results show the system is free of dead and blind zones.
Topics & Concepts
Phase-locked loopLoop (graph theory)Phase (matter)Phase detectorDead zoneDetectorPhase frequency detectorPhysicsOpticsMaterials scienceControl theory (sociology)Computer scienceGeologyMathematicsOceanographyControl (management)VoltageCapacitorQuantum mechanicsArtificial intelligenceCharge pumpCombinatoricsAdvancements in PLL and VCO TechnologiesVLSI and Analog Circuit TestingAnalog and Mixed-Signal Circuit Design