In this study, a new current-mode fractional-order universal filter is presented by using multi mode second generation current controlled current conveyors (MO-CCCII). The circuit consists of two resistors and grounded capacitors with only three MO-CCCII. This is accomplished with a fractional-order capacitor, also known as a stationary phase element, to form a fractional-order filter. The value of this capacitor depends only on the fractional-order α(0<α<1). The proposed filter is designed as fractional (1+α)=1.5, 1.8 and 1.9 order. The fractional-order capacitor is obtained using the Foster-I RC network circuit. The filter is simulated with BJT-based MO-CCCII using PSPICE simulation program for the filter to verify the theory and to show the performance of it. The fractional-order universal filter outputs are provided the desired stop band attenuation and more precise control of attenuation slope. Through the fractional-order parameter, it is revealed that the filter designer can fully meet the requirements of the filter. It also offers design flexibility since the frequencies of interest depend not only on circuit components but also on fractional-order parameters.

中文翻译：

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基于 MO-CCCII 的电流模式分数阶通用滤波器

在这项研究中，采用多模第二代电流控制电流传送器（MO-CCCII）提出了一种新的电流模式分数阶通用滤波器。该电路由两个电阻和接地电容组成，只有三个 MO-CCCII。这是通过分数阶电容器（也称为固定相元件）来实现的，以形成分数阶滤波器。该电容的值仅取决于分数阶α(0<α<1). 所提出的滤波器设计为分数(1+α)=1.5, 1.8 和 1.9 阶。分数阶电容器是使用 Foster-I 获得的RC网络电路。采用基于 BJT 的 MO-CCCII 对滤波器进行了仿真，使用 PSPICE 仿真程序对滤波器进行了仿真，以验证其理论并展示其性能。分数阶通用滤波器输出提供了所需的阻带衰减和更精确的衰减斜率控制。通过分数阶参数，表明滤波器设计者完全可以满足滤波器的要求。它还提供了设计灵活性，因为感兴趣的频率不仅取决于电路元件，还取决于分数阶参数。