自動增益控制放大系統(tǒng)設(shè)計畢業(yè)論文-wenkub
2022-09-10 11:45:48 本頁面
【正文】 、微波通信、衛(wèi)星通信等通信系統(tǒng)以及雷達、廣播電視系統(tǒng)中也得到了廣泛的應(yīng)用。 關(guān)鍵詞： 放大器；自動增益控制； 電壓跟隨器； 濾波器 安徽理工大學(xué) 畢業(yè)設(shè)計 II ON THE DESIGN OF AUTOMATIC GENERATION CONTROL ABSTRACT The automatic gain control electric circuit has been widely used in all kinds of receivers、 tape recorders and signal gathering systems, and also been used in munications system radar, the broadcast television system and optical fiber munications, microwave munications, satellite munications. This topic mainly studies to the applies to the front level voltage amplification of the audio frequency amplification, therefore the frequency band scope of the electric circuit should be wider that can make the pronunciation signals to pass. Because the frequency band scope of the pronunciation signal is 300 Hz3400 Hz, so the frequency band scope of our electric circuit should be designed within 300 Hz3400 Hz. And the electric circuit should realize the closed loop adjustment which increases, it may realize the automatic control through this electric circuit which increases when the tonic train signal is strong automatically that it can reduce the multiple of the amplifier, and when the signal is weak that it can automatically increase the amplifier the multiple, so that can realize the volume with automatic control. This topic also introduced in the concept principle of the automatic gain control as well as to automatically increases the system every part of principle of work the detailed introduction, and it pays attention to the question to the test result of this system .Finally we have make some analysis to the design. KEYWARDS： Amplifier； Automatic Gain Control； AGC； Voltage follower； Filter 安徽理工大學(xué) 畢業(yè)設(shè)計 目 錄 摘 要 .................................................................... I 第 1 章 引言 ............................................................ 1 第 2 章 自動增益控制 .................................................... 2 自動增益控制 ....................................................... 2 自動增益控制電路（ AGC）存在的意義 ............................ 2 自動增益控制的基本概念 ....................................... 2 自動增益控制的原理 ........................................... 2 自動增益控制放大器 ............................................. 4 本課題的研究內(nèi)容 ............................................... 4 第 3 章 自動增益控制放大器的電路設(shè)計 .................................... 5 方案選擇 ........................................................... 5 壓隨器工作原理 ..................................................... 7 整流電路工作原理 ................................................... 7 濾波電路工作原理 ................................................... 8 增益控制工作原理 ................................................... 8 電路元器件選擇 ..................................................... 9 運算放大器 ................................................... 9 場效應(yīng)管選擇 ................................................ 10 其他元器件選擇 .............................................. 10 第 4 章：放大器電路的調(diào)試及實驗結(jié)果 ....................................... 12 放大器電路的 調(diào)試 .................................................. 12 實驗
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