In this work, a new design of continuous time current differencing buffered amplifier based low-pass, high-pass, band-pass, all-pass and notch fractional-order filters is reported. The design of proposed filters is based on the approximation of fractional-order filters by using an appropriate integer order transfer function. Signal flow graph approach is used for the realization of fractional-order filters of order (1 + α). The frequency responses of the proposed circuits are verified using MATLAB in conjunction with SPICE. The evaluation of the realized fractional-order filters are also performed through the AC analysis and corner analysis. Furthermore, stability and sensitivity investigations are also investigated. It is observed from the simulation results that the fractional-order filters are appropriate for IC implementation.

在这项工作中，报告了一种基于低通，高通，带通，全通和陷波分数阶滤波器的连续时间电流差分缓冲放大器的新设计。所提出的滤波器的设计基于分数阶滤波器的近似值，方法是使用适当的整数阶传递函数。信号流图方法用于实现阶数为（1 +α）的分数阶滤波器。使用MATLAB结合SPICE验证了所提出电路的频率响应。对已实现的分数阶滤波器的评估也通过AC分析和拐角分析进行。此外，还研究了稳定性和敏感性研究。从仿真结果可以看出，分数阶滤波器适用于IC实现。