| 摘要 |
Device for recovering a carrier including a first mixer for multiplying passband I, and Q signals and a first complex carrier to produce baseband I, Q signals, a filter part for providing pilot components of the baseband I, and Q signals only, a first phase error detector for receiving the pilot component to produce first phase error information, a second mixer for multiplying the passband I, Q signals and a second complex carrier, a second phase error detector for multiplying a difference of samples from the second mixer at first and second time points and a sample at a middle time point of the two samples for producing second phase error information, a loop filter for receiving first and second phase error information and selectively forwarding one of the first and second phase error information, and first, and second oscillators for producing the first and second complex carriers in proportion to an output of the loop filter, and providing to the first and second mixers respectively, thereby minimizing PLL residual jitter characteristics after FPLL convergence.
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