請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40885
標題: | 高動態範圍155Mbps轉阻放大器 High Dynamic Range 155Mbps Transimpedance Amplifier |
作者: | Chien-Hung Chen 陳建宏 |
指導教授: | 曹恆偉(Hen-Wai Tsao) |
關鍵字: | 光纖到府,被動式光纖網路,轉阻放大器,光二極體,並聯-並聯回授放大器,自動增益控制,固定轉導, Fiber To The Home(FTTH),Passive Optical Network(PON),Transimpedance Amplifier,Photodiode,Shunt-Shunt Feedback Amplifier,Auto Gain Control,Constant Transconductance, |
出版年 : | 2008 |
學位: | 碩士 |
摘要: | 網路傳輸的主流技術,從以前的56K撥接網路,演進到ADSL、cable modan。但隨著資訊的發展以及網路基礎建設的普及,使得數位家庭、線上遊戲、影音檔案傳輸等寬頻應用大量增加,因此ADSL、cable modan等網路技術漸漸無法滿足日益龐大的資料傳輸。光纖因具有高頻寬、舖設容易、大容量、低損失與不受電磁波干擾、經濟性優異、保密性佳等特性,因此逐漸取代傳統以銅線傳輸的傳輸模式,成為未來寬頻網路的趨勢。
早期電信業者鋪設光纖大都以骨幹網路為主,再從骨幹網路以銅線傳輸的方式連接家庭。隨著寬頻應用需求不斷提昇,連接家庭的銅線效能卻有其極限,因此形成整個網路傳輸的瓶頸。所以光纖已漸漸將以往從電信機房局端(Optical Line Terminal, OLT)到用戶終端(Optical Network Unit, ONU; Optical Network Terminal, ONT)的最後一哩銅線取代。 轉阻放大器(Transimpedance amplifier,TIA)是用於光纖網路接收端,它直接轉換從光二極體(photodiode)產生的微弱電流訊號,因此它必須抗雜訊能力很強。另外當光纖傳輸訊號時,光能量的動態範圍很大,為此我們特別提出用電壓轉電流的技巧,使得IC內的auto gain control電路可以因應輸入訊號的大動態範圍。因此本顆IC特色是動態輸入範圍很大(-39dBm~+3dBm),靈敏度(sensitivity)可達到-39dBm,操作電壓3.3V~5V,數據傳輸速率(data rate)155Mbps,製程是0.35um CMOS製程。 The mainstream network transmission technologies evolved from 56k dial-up network to ADSL and cable modems nowadays. In addition, the advance of technologies and popularization of network infrastructures cause several broadband applications such as digitalhome, online game, video and music file transmissions to increase drastically. However, network technologies such as ADSL and cable modems are unable to satisfy the demand of huge data transmission today. Optical fiber, because of high bandwidth, large capacity, low loss, low cost, good security, being unaffected by EM wave disturbance, being laid down easily, is now substituting for traditional copper wire and becoming a trend in future broadband network. Early optical fiber was laid down by telecommunication entrepreneurs mostly by the backbone network. The backbone network was then connected to users’ homes by copper wire. However, with the demand of broadband applications increasing, the copper wire is reaching its limits, forming a bottleneck in network transmission. So the last mile of copper wire which connects Optical Line Terminal (OLT) and Optical Network Unit (ONU) is replaced by optical fiber now. According to references, transimpedance amplifier(TIA) is suitable for the optical fiber network receiver. It transforms the weak current signal from photodiode directly, and therefore its anti-noise ability must be very strong. Moreover, when optical fiber transmits signal, the light energy dynamic range is very large. For this reason, a voltage to current technique is specially proposed to allow IC auto gain control circuit to deal with the high dynamic range of input signal. Therefore the characteristics of the IC in this study include large input dynamic range (-39dBm~+3dBm), high sensitivity (-39dBm), supply voltage (3.3~5V), data rate 155Mbps, and process 0.35um CMOS. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40885 |
全文授權: | 有償授權 |
顯示於系所單位: | 電子工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-97-1.pdf 目前未授權公開取用 | 6.25 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。