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采用电流型器件（ＦＴＦＮ）高输出阻抗形式构成二阶滤波器新电路．并由源电路得到了低通、高通、带通滤波特性，该电路具有无源灵敏度和有源灵敏度低的突出优点．实验结果证明此滤波器的可行性．
The use of current-mode devices (FTFN) high-output impedance forms form a new second-order filter circuit. The low pass, high pass, band pass filter characteristics are obtained from the source circuit. This circuit has the outstanding advantages of low passivity and low active sensitivity. Experimental results prove the feasibility of this filter.