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標題: | 基於二位元相位偵測器之全數位鎖相迴路 An All-Digital Phase-locked Loop Based on Bang-bang Phase Detector |
作者: | Bo-Cheng Guo 郭博誠 |
指導教授: | 曹恆偉 |
關鍵字: | 數位鎖定相位迴路,二位元相位偵測器,FPGA電路板, Digital Phase-locked Loop,bang-bang Phase Detector,FPGA board, |
出版年 : | 2010 |
學位: | 碩士 |
摘要: | 隨著CMOS製程科技的進步,鎖定相位迴路(Phase-locked Loop)已被廣泛應用於各種類型的系統,例如微處理器系統、記憶體積體電路、有線與無線網路信號傳輸…等等,都需要產生其規格所需的時脈頻率和相位,並以此時脈信號作為整體電路系統的動作時序基準。
一般常見的鎖定相位迴路分為類比鎖相迴路(Analog Phase-Locked Loop)與數位鎖相迴路(Digital Phase-locked Loop)。雖然傳統設計多採用前者,但數位鎖相迴路因具有抗製程變異性高和容易隨著製程轉移的優點,所以近年來電路發展的潮流也是盡量朝著全數位化前進。 本論文所設計為為基於二位元相位偵測器之數位鎖相迴路,核心的電路是使用互補式金氧半電晶體 0.18 μm的製程來實做晶片,而其餘數位演算法的電路則以Altera DE2-70的FPGA電路板來一起驗證。在輸入參考頻率為18.75MHz下,輸出頻率為2.4GHz時,時脈峰對峰抖動和方均根抖動分別為37ps和7ps,下線的晶片面積為1000 μm x 750 μm(包含Pad),功率消耗為55mW(含buffer)。 As the progress of CMOS technology, phase-locked loop has been widely implemented in many applications, such as mems, memory integrated chip and communication systems. It is used to generate the clock frequency and phase in a system. The traditional structure of a phase-locked loop could be classified into two kinds. One is analog phase-locked loop (APLL), the other is all-digital phase-locked loop (ADPLL). Although the former is usually adopted by conventional ic designer, ADPLL is more suggested in recently years because of its good tolerance to PVT variations and less sensitive to supply noise. Furthermore, ADPLL can be portable to new technology. It can reduce the development time for system-on-chip applications. This thesis proposed an ADPLL based on bang-bang phase detector with a frequency detector. The chip is fabricated in TSMC 0.18μm CMOS technology with an area of 1000 μm x 750 μm. Under 1.8V supply, the power dissipation is 43mW with output buffer. The measured output clock’s rms and peak-to-peak jitter are 7ps and 37ps at 2.4GHz. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/23421 |
全文授權: | 未授權 |
顯示於系所單位: | 電子工程學研究所 |
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