This paper introduces a novel voltage-mode multifunction biquadratic filter with single input and four outputs using two plus-type di fferential difference current conveyors (DDCCs) and four grounded passive components. The filter can realize inverting
highpass, inverting bandpass, noninverting lowpass, and noninverting bandpass filter responses, simultaneously. It still maintains the following advantages: (i) using grounded capacitors attractive for integration and absorbing shunt parasitic capacitance, (ii) using grounded resistors at all X terminals of DDCCs suitable for the variations of filter parameters and absorbing series parasitic resistances at all X terminals of DDCCs, (iii) high-input impedance good for cascadability, (iv) no need to change the filter topology, (v) no need to component-matching conditions, (vi) low active and passive sensitivity performances, and (vii) simpler configuration due to the use of plus-type DDCCs only. HSPICE and MATLAB simulations results are provided to demonstrate the theoretical analysis.


本文介紹了一種新穎的用兩個(gè)加型差動(dòng)差分電流傳送器（DDCCs）和四個(gè)接地?zé)o源元件單輸入和四個(gè)輸出的電壓模式多功能二階濾波器。該過濾器可實(shí)現(xiàn)高通反相，帶通反相，低通同相，帶通同相濾波器同時(shí)進(jìn)行反應(yīng)。它仍然保持著以下優(yōu)點(diǎn)：（一）使用接地電容吸引力的融合和吸收分流寄生電容，（二）用所有使用X終端的接地電阻適應(yīng)過濾器參數(shù)的變化。吸收串聯(lián)在所有的X終端的DDCCs寄生電阻，（三）高輸入阻抗級(jí)聯(lián)好，（四）無需更換過濾器拓?fù)浣Y(jié)構(gòu)，（五）不需要元件的匹配條件，（六）有源和無源靈敏度低，以及（七）由于只使用加型DDCCs簡(jiǎn)單配置。HSPICE andMATLAB的模擬結(jié)果為理論分析提供證明。