具有跳耦結(jié)構(gòu)的電流模式低通濾波器設(shè)計(jì)
DESIGN OF CURRENT-MODE LOW-PASS FILTER WITH LEAPFROG STRUCTURE
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摘要: 本文討論了電流模式RC梯形結(jié)構(gòu)低通濾波器的一種有源實(shí)現(xiàn)方法跳耦法,以此實(shí)現(xiàn)的電流模式低通濾波器采用CCⅡ,CCⅠ器件做為有源器件,比相應(yīng)電壓模式電路結(jié)構(gòu)簡單,且RC元件全部接地。這種跳耦結(jié)構(gòu)和梯形結(jié)構(gòu)一樣具有低的元件靈敏度。
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關(guān)鍵詞:
- 濾波器; 梯形結(jié)構(gòu); 跳耦; CC器件
Abstract: Leapfrog technique is discussed and used to realize current-mode lowpass active RC ladder structure. The current-mode lowpass filter realized by this method only takes CCII, CCI as active devices, and all RC elements axe grounded, therefore, this structure is simpler than the relating voltage-mode one. It also has low sensitivity as the other ladder structures do. -
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