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| 研究生： |
陳維振 Wei-Chen Chen |
|---|---|
| 論文名稱： |
10 kHz 偵測雙峰值電壓之自動增益控制器 A 10-kHz Automatic Gain Controller with Dual-Peak Voltage Dectection |
| 指導教授： |
姚嘉瑜
Chia-Yu Yao |
| 口試委員: |
陳筱青
Hsiao-Chin Chen 彭盛裕 Sheng-Yu Peng |
| 學位類別： |
碩士 Master |
| 系所名稱： |
電資學院 - 電機工程系 Department of Electrical Engineering |
| 論文出版年： | 2016 |
| 畢業學年度： | 104 |
| 語文別： | 中文 |
| 論文頁數： | 67 |
| 中文關鍵詞： | 自動增益控制器 、可變增益放大器 |
| 外文關鍵詞： | automatic gain controller, variable gain amplifier |
| 相關次數： | 點閱：250 下載：6 |
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本篇論文為設計一個應用於生醫系統的類比式自動增益控制器(Automatic gain controller, AGC)，由於個人化與環境差異，造成接收機接收到的訊號強度不足、亦不固定，AGC利用偵測輸出訊號峰值的電壓大小適當地調整系統的放大增益，將振幅強度不固定的輸入訊號放大至一定的強度後輸出。
本論文提出的AGC利用偵測輸出訊號的上峰及下峰電壓值，有效的提高非對稱訊號的放大倍率，本電路具有42dB的增益調整範圍，最高增益為42dB最低增益為-2dB，操作頻寬設計在10 KHz，總諧波失真(Total harmonic distortion, THD)為-59.3dB，在1.8V工作電壓下的功耗為1.97mW，晶片總面積為1.14mm2，核心部分面積為0.253mm2，並以UMC 0.18um CMOS製程實現。
The objective of this thesis is to design an analog automatic gain controller (AGC) for biomedical applications. The received bio signal strength varies due to the personal and the environmental differences. The purpose of AGC is to control its output signal amplitude, despite variation of the input signal amplitude. The peak output signal level is used to dynamically adjust the AGC gain to a suitable value.
This thesis presents an AGC which detects the positive peak and the negative peak from the output signal amplitude, which improves the output dynamic range for an asymmetric signal. This AGC provides a again range from -2dB to 42dB. The system bandwidth is set to 10 kHz. The total harmonic distortion (THD) is -59.3dB. The power consumption of the AGC is 1.97mW under 1.8 V supply voltage. The total chip area, including pads, is 1.14mm2 with pads, and the core area is 0.253mm2. This chip was fabricated in UMC 0.18um CMOS process.
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