PHASE LOCKED LOOP AND INJECTION LOCKING METHOD FOR THE SAME

摘要

According to one embodiment of the present invention, a phase locked loop includes: an injection locking unit which generates a multi-phase signal based on a reference frequency signal and a fed-back delay locked loop frequency signal and at least one pulse corresponding to the generated multi-phase signal; and a phase locked loop unit which controls the phase locked loop frequency signal based on a phase difference between the reference frequency signal and the fed-back phase locked loop frequency signal. The phase locked loop unit can control a phase of the phase locked loop frequency signal based on the pulse.