| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase synchronization device that utilizes a dead band in the output signal of a phase comparator to switch the frequency asynchronously at a high-speed and reduce the spurious quantity in a synchronous state. SOLUTION: The phase synchronization device consists of a phase comparator that generates a phase difference signal, a phase leading device that advances a phase of the phase difference signal to generate a leading phase signal, a phase lagging circuit that delays the phase of the phase difference signal to generate a lag phase signal, a synthesizer that synthesizes the lead phase signal and the lag phase signal to generate a corrected phase difference signal, and an oscillator whose frequency is controlled on the basis of the corrected phase difference signal. |
