A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a voltage signal which represents the difference in phase between two signal inputs. It is an essential element of the phase-locked loop (PLL).
Detecting phase differences is very important in many applications, such as motor control, radar and telecommunication systems, servo mechanisms, and demodulators.
Read more about Phase Detector: Types, Electronic Phase Detector, Optical Phase Detectors
Famous quotes containing the word phase:
“I had let preadolescence creep up on me without paying much attentionand I seriously underestimated this insidious phase of child development. You hear about it, but youre not a true believer until it jumps out at you in the shape of your own, until recently quite companionable child.”
—Susan Ferraro (20th century)