| 摘要 |
A phase-locked loop for adjusting a phase difference between an output signal and an input signal, comprising a phase detector for generating a phase difference signal depending on a phase difference between said output signal and a phase-shifted input signal, a calculator for calculating a signal depending on said phase difference signal and an adjustable offset signal, an oscillator for generating said output signal having an oscillation frequency which is adjusted in response to said calculated signal, and a phase shifter for shifting a signal phase of said input signal by a predetermined phase in response to a control signal to generate said phase-shifted input signal applied to said phase detector.
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