 技術摘要 / Our Technology： |
一種鎖相迴路，其包括一相位電壓轉換單元、一校正單元與一振盪回授單元。相位電壓轉換單元根據其所接收的一參考訊號與一第一回授訊號的頻率與相位差異，產生一第一調整訊號。校正單元根據其所接收的參考訊號與第一回授訊號的頻率差異，和經由一個二位元搜尋運算，產生一第二調整訊號。振盪回授單元具有一可控制電容陣列，接收第一調整訊號與控制可控制電容陣列的第二調整訊號，以輸出一第二回授訊號，使第二回授訊號的相位被鎖定於參考訊號的相位。利用該鎖相迴路達成減少校正頻率所需時間的功效。
A phase-locked loop including a phase-voltage conversion unit, a calibration unit, and an oscillation feedback unit is provided. The phase-voltage conversion unit receives a reference signal having a first frequency and a first phase, and a first feedback signal having a second frequency and a second phase, and produces a first adjusting signal based on the first frequency, the second frequency, and a phase difference between the first phase and the second phase. The calibration unit receives the reference signal and the first feedback signal, and produces a second adjusting signal based on a frequency difference between the first frequency and the second frequency through a binary search operation. The oscillation feedback unit receives the first adjusting signal and the second adjusting signal, and has a controllable capacitor array controlled by the second adjusting signal for producing a second feedback signal having a third phase locked to the first phase.
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| 專利簡述 / Intellectual Properties： |
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聯繫方式 / Contact： |
| 臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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| Email：ordiac@ntu.edu.tw |
電話/Tel：02-3366-9945 |
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專利行銷平台