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題 名 | Voltage-mode Universal Biquadratic Filter Using Current-feedback Amplifiers=使用電流回授放大器之電壓模式泛用二階濾波器 |
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作 者 | 洪君維; 彭國華; 朱潔梅; 陳光遠; | 書刊名 | 中原學報 |
卷 期 | 30:1 2002.03[民91.03] |
頁 次 | 頁67-70 |
分類號 | 448.533 |
關鍵詞 | 電流回授放大器; 泛用二階濾波器; Current-feedback amplifier; CFA; Universal biquadratic filter; |
語 文 | 英文(English) |
中文摘要 | 本文提出了一個新型電壓模式泛用二階濾波器電 路,這個電路使用了三個電流回授放大器(CFA),兩個 電容及四個電阻。所提出的電路可以合成二階低通, 帶通,高通,帶拒及全通J港、波器o所提出泛用二階濾 波器的一些混波器型式擁有多於一個可同時輸出的濾 波器響應。其中一個桂、波器型式擁有可同時合成正型 低述,負型帶通及正型高通的訊號,且具備高的輸入 阻抗以及僅使用了接地電容的優點。所提出電路的主 動及被動靈敏度皆低,由於CFA的輸出阻抗非常低, 所提出電路的輸出訊號可以直接接到下一級去o |
英文摘要 | A new configuration for realizing voltage-mode universal biquadratic filter by using three current-feedback amplifiers (CFAs), two capacitors and four resistors is presented. The proposed configuration can realizelowpass, bandpass, highpass, notch and allpass transfer functions. Some of the derived filter types from the proposed universal biquadratic filter enjoy the advantage of having one (or two) more simultaneous output filter responses. One of the derived filter types enjoys the advantages of realizing non-inverting lowpass, inverting bandpass and non inverting highpass signals simultaneously with high input impedance and grounded capacitors. The active and passive sensitivities are low. Because the output impedance of the CF A is very low, the output terminals of the proposed configuration can be directly connected to the next stage. |
本系統中英文摘要資訊取自各篇刊載內容。