Phase detection device and phase error tracking method using phase error detection

摘要

In particular, the present invention detects the phase error variation by allowing a n-tap natural reference clock through a phase detector, detecting the state of the system clock at each delay point, and applying an LMS algorithm to flexibly cope with environmental changes by changing parameters. The present invention relates to a phase detection apparatus and a phase error tracking method, wherein a phase detector for detecting a phase by receiving a first clock divider divided by N times when an external clock signal is input and a signal divided by the first clock divider And a digital signal processor for receiving the detected digital signal of the phase detector and processing the digital signal, a digital / analog converter for receiving the digital signal processed through the digital signal processor and converting the digital signal into an analog signal, and the digital / A differential amplifier for amplifying the converted analog signal of the analog converter, and the differential amplifier A voltage controlled crystal oscillator for receiving a heavy analog signal of the controller and oscillating a voltage control signal, and a second clock divider for receiving the system clock signal of the voltage controlled crystal oscillator and dividing it K times and outputting it to a phase detector. It features.