本篇論文呈現一個嶄新的超低功率電流模式環境光感應器，主要應用於消費性電子產品中做為調節電源之用，另外本感應器的優異特性可提供廣泛佈署感應器節點系統之應用。本感應器可在非常低的供給電壓(<1.2V)下操作，以達到超低功率的需求，此外感應器的輸出不受到供給電壓改變而變動，具備高供給電壓適應性，這是因為本設計利用漸進式逼近暫存器結合累進放大倍率的電流鏡做類比數位轉化，電流模式操作不需要類比數位轉換電路的電容陣列，可避免充放電容所需的能量消耗，且有效的節省電路的面積，因應室內或室外感測的需求，可藉由改變本感應器的操作頻率調整感應範圍。基於以上特性，此電流模式的設計適合消費性電子產品應用，也可適應無線環境感應器模組的嚴格硬體需求。

This work presents a novel current mode ultra low power ambient light sensor for distributed sensor node application. Thissensor features minimum supply voltage (<1.2V) for meeting the low power requirement, by a successive approximation register logic combined with progressive sizing current mirrors for analog-to-digital conversion, The current-mode operation simplifies the ADC circuit by eliminating the capacitors array, which further reduces its power consumption. Furthermore, controlling theadjustable dynamic range for indoor or outdoor sensing can be obtained by clock frequency. This current mode sensor provides a promising solution for distributed environmental sensing modulesunder tight energy budgets.

Abstract i
摘要 ii
致謝 iii
內文目錄 iv
圖片目錄 vi
表格目錄 vii
第一章 緒論 1
1.1研究動機 1
1.2章節簡介 2
第二章 文獻回顧 3
2.1無線感應器系統介紹 3
2.1.1無線感應器系統應用 3
2.1.2無線感測系統架構 4
2.1.3感測端硬體限制 5
2.2低功率光感測器模組 6
2.2.1自我供電系統與其限制 6
2.2.2自我供電之感光二極體感測器 7
2.3小結 7
第三章 電流模式環境光感測器設計與模擬結果 14
3.1電流鏡環境光感測器之架構 14
3.2 Wilson電流鏡環境光感測器 15
3.3環境光感測器之模擬結果 16
3.4小結 16
第四章 環境光感應器電路與佈局圖改善 31
4.1電路誤差改善 31
4.2結合medium Vth transistor的低誤差電流鏡 32
4.2.1結合medium Vth transistor的低誤差Wilson電流鏡電路架構 32
4.2.2製成誤差模擬特性比較 33
4.3低製程變動佈局方式 34
4.3.1製成誤差模擬特性比較 34
4.3.1低漏電流之感光二極體佈局 35
4.4實作晶片之量測結果與討論 35
4.5小結 37
第五章 結論 53
5.1新型環境光感測器的優點分析 53
5.2總結及未來展望 53
參考文獻 55

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