 技術摘要 / Our Technology： |
一種用於展頻傳輸之電路，包括一鎖相迴路、一鎖頻迴路、一鎖幅迴路、一數位類比轉換器、一注入電流源、一引出電流源、一多工器及一軌對軌數位信號產生器。該鎖相迴路係包括一濾波器，該濾波器為一電容，該鎖相迴路根據一參考時脈信號及一迴授信號之頻率差及相位差進行比較產生遞增控制信號及遞減控制信號，並對該遞增控制信號及該遞減控制信號進行充放電以產生一控制電流，對該遞增控制信號及該遞減控制信號進行濾波以產生一控制電壓，且根據該控制電壓的電壓值變化產生一時脈信號。本發明亦揭露一種用於展頻傳輸之方法。
A spread spectrum transmission circuit includes a phase locked loop composed of a filter. The phase locked loop generates a series of incremental control signals and decreasing control signals based on the frequency difference and phase difference between a reference clock signal and a feedback signal. The circuit further has a frequency locked loop an amplitude locked loop, a digital-analog converter, an injection current source, an extraction current source, a multiplexer is connected to the locked phase loop and a rail-to-rail digital signal generator having an input connected to the multiplexer and an output connected to inputs of the locked frequency loop and the locked amplitude loop.
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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