Abstract: “This paper presents the tunable technique of the analog filter at high frequency fp = 1 MHz by used the Fractional-order (n+α) step, where n is an original of integer-order on circuit and a is an approximation order step 0 < α < 1 , An approximation order is designed from the Fractance circuits, and also presents the approximation function of the Fractional-order Laplacian Sα design on the OTA low-pass filter circuit. This circuit used single active component. OTA and CFA components are in monolithic chip (IC LT1228).The CFA design with the Fractional-order elements to feedback control the OTA for relative stabilty gain of amplifier. The results shown that tunable filter by Fractional-order step technique provides the flat passband and reduced the peaking problem and improved slope of magnitude response of filter and result comparable with high-order filters.”

Keywords: Operation Transconductance; Fractional-order; Low Pass filter; Fractance circuits