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Electronically Tunable Fractional Order Filter
Arabian Journal for Science and Engineering, 2017In this paper, an electronically tunable resistorless fractional order filter (FOF) based on operational transconductance amplifier (OTA) is presented. It uses two fractional capacitors (FC) of same order and provides fractional order low-pass filter and fractional order band-pass filter responses simultaneously.
Rakesh Verma +2 more
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Fractional-Order Shelving Filter Designs for Acoustic Applications
2020 IEEE International Symposium on Circuits and Systems (ISCAS), 2020Fractional-order shelving filter designs, which are used for preserving the spectral balance of the human sound perception, are introduced in this work. The main attractive offered benefit is originated from the fact that fractional-order filters offer an extra degree of freedom with regards to the slope of the stop-band attenuation, allowing an ...
Stavroula Kapoulea +2 more
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Procedure for Designing Fractional-Order Filters
2017This chapter presents a systematic procedure for designing fractional-order transfer functions. Fractional-order differentiator, lossless and lossy integrator of order α, and fractional-order filters of any type (i.e., low-pass, high-pass, band-pass, band-stop) of order 1 + α, α + β, and n + α, where n is the integer-order and corresponds to values n ≥
Georgia Tsirimokou +2 more
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Voltage-Mode Fractional-Order Filters
2017This chapter presents a voltage-mode technique for realizing fractional-order filters. Low-voltage OTAs are employed as active elements. Fractional-order filters are designed with the additional benefit that different types of filter functions are realized using the same topology. As a result, the resulted filter functions are generalized.
Georgia Tsirimokou +2 more
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Design and properties of fractional-order multifunction filter with DVCCs
2016 39th International Conference on Telecommunications and Signal Processing (TSP), 2016Fractional-order filter employing two differential voltage current conveyors, four grounded passive elements, one of which has fractional-order impedance, is presented. The filter provides low-pass and band-pass transfer function simultaneously and its order can be set between one and two.
David Kubánek +4 more
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Fractional-order filters based on low-voltage DDCCs
Microelectronics Journal, 2016This paper presents the design and implementation of fractional-order filters based on promising CMOS structure of Differential Difference Current Conveyor (DDCC), which was designed and fabricated using the 0.35µm CMOS AMIS process. The derivation of the filters has been achieved using a second-order approximation of the corresponding fractional-order
Fabian Khateb +3 more
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ON THE GENERALIZATION OF SECOND-ORDER FILTERS TO THE FRACTIONAL-ORDER DOMAIN
Journal of Circuits, Systems and Computers, 2009This work is aimed at generalizing the design of continuous-time second-order filters to the non-integer-order (fractional-order) domain. In particular, we consider here the case where a filter is constructed using two fractional-order capacitors both of the same order α.
Ahmed G. Radwan +2 more
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Programmable analog array of fractional-order filters with CFOAs
2017 40th International Conference on Telecommunications and Signal Processing (TSP), 2017A novel Programmable Analog Array of fractional-order filters is proposed in this paper. It is constructed from an active core which is implemented using Current Feedback Operational Amplifiers as active elements. The scheme offers the realization of lowpass, highpass, bandpass, and bandstop fractional-order filter functions of various orders, and this
Georgia Tsirimokou +4 more
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Approximated Fractional-Order Inverse Chebyshev Lowpass Filters
Circuits, Systems, and Signal Processing, 2015In this paper we use a least-squares fitting routine to approximate the stopband ripple characteristics of fractional-order inverse Chebyshev lowpass filters which have fractional-order zeros and poles. MATLAB simulations of $$(1+\alpha )$$(1+ )-order lowpass filters with fractional steps from $$\alpha =0.1$$ =0.1 to $$\alpha =0.9$$ =0.9 are given as ...
Todd J. Freeborn +2 more
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Current-Mode Fractional-Order Filters
2017This chapter presents a current-mode technique for realizing fractional-order filters, where low-voltage current mirrors are employed as active elements. A novel topology of a current mirror, which is able to realize large time-constants is introduced.
Georgia Tsirimokou +2 more
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