【正文】
生醫(yī)專業(yè)綜合設(shè)計(jì)報(bào)告 設(shè)計(jì)名稱: 36dB/oct 低通濾波器 姓 名: xxx 學(xué) 號(hào) : xxxx 班 級(jí): xxxx 指導(dǎo)教師: xxx 起止日期: 20xx1118 至 20xx1215 信息工程學(xué)院制 2 綜 合 設(shè) 計(jì) 任 務(wù) 書 學(xué)生班級(jí): xxx 學(xué)生姓名: xxxx 學(xué)號(hào): xxxx 設(shè)計(jì)名稱: 36dB/oct 低通濾波器 起止日期: 20xx1118 至 20xx1215 指導(dǎo)教師: xxx 設(shè)計(jì)要求: 熟悉有關(guān)濾波器設(shè)計(jì)理論只是,選擇合適的濾波器技術(shù)指標(biāo),設(shè)計(jì)低通濾波器對(duì)信號(hào)進(jìn)行濾 波,對(duì)比分析濾波前后信號(hào)的頻譜。 產(chǎn)生一個(gè)連續(xù)信號(hào),包含低頻、中頻、高頻分量,對(duì)其進(jìn)行采樣,進(jìn)行頻譜分析,并設(shè)計(jì)低通濾波器對(duì)信號(hào)進(jìn)行濾波處理 ,觀察濾波后信號(hào)的頻譜。 綜 合 設(shè) 計(jì) 學(xué) 生 日 志 時(shí)間 設(shè)計(jì)內(nèi)容 20xx/11/18 確定設(shè)計(jì)目的和意義并查閱資料 20xx/11/25 完成原理圖設(shè)計(jì)及仿真, 寫預(yù)習(xí)報(bào)告 20xx/11/29 完成系統(tǒng)的制作、調(diào)試 20xx/12/07 寫設(shè)計(jì)總結(jié)報(bào)告 1 36dB/OCT 低通濾波器 摘要 :低通濾波器是一個(gè)通過低頻 信號(hào)而衰減或抑制高頻信號(hào)的部件。理想濾波器電路的頻響在通帶內(nèi)應(yīng)具有一定幅值和線性相移,而在阻帶內(nèi)其幅值應(yīng)為零。有源濾波器是指由放大電路及 RC 網(wǎng)絡(luò)構(gòu)成的濾波器電路,它實(shí)際上是一種具有特定頻率響應(yīng)的放大器。濾波器的階數(shù)越高,幅頻特性衰減的速率越快,但 RC 網(wǎng)絡(luò)節(jié)數(shù)越多,元件參數(shù)計(jì)算越繁瑣,電路的調(diào)試越困難。 而設(shè)計(jì)濾波器的方法根據(jù)要求的不同主要有巴特沃斯逼近、切比雪夫逼近和貝塞爾逼近。本電路是 36DB/OCT 巴特沃斯濾波器 關(guān)鍵詞 :36dB/OCT; 低通濾波器; 集成運(yùn)放 2 36dB/OCT lowpass filter Abstract: Low pass filter is a by low frequency signal attenuation or suppress the high frequency ponents of signals. Ideal filter circuit should have certain amplitude frequency response in the pass band and linear phase shift, and its amplitude should be zero in the stop band. Active filter is to point to by amplifying circuit and filter circuit, posed of RC work。 it is actually a kind of specific frequency response of the amplifier. The higher the order number of the filter, amplitude frequency characteristics of attenuation rate faster, but the RC work node number, the more ponents parameter calculation is more tedious, the more difficult the debugging of the circuit. And filter design method according to the requirements of different mainly include Butterworth, Chebyshev approximation and Bessel approximation. This circuit is 36 db/OCT Bart filters Keyword: 36 dB/OCT, Low pass filter,