A Current Mode Design of Fractional Order Universal Filter

Saçu, İbrahim Ethem; Alçı, Mustafa

doi:10.4316/aece.2019.01010

Cited by 7 publications

(9 citation statements)

References 21 publications

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“…Conversely, the proposed FOF incorporates a grounded active resistor that is implemented using MOSFET, making the design well-suited for the fabrication process. In addition, it should be noted that the designs, with the exception of the ones referenced as [17,18,[32][33][34]36,37], do not offer tunability of order and pole frequency.…”

Section: Comparisonmentioning

confidence: 99%

Power-Efficient Electronically Tunable Fractional-Order Filter

Tasneem,

Ranjan,

Paul

et al. 2023

Fractal Fract

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This article describes a low-voltage, low-power fractional-order low-pass filter (FO-LPF) of order 1 + α, which is implemented using a voltage differencing differential difference amplifier (VDDDA). The VDDDA structure is implemented using the bulk-driven metal oxide semiconductor transistor technique. The transistors operate in the subthreshold region to maintain low-supply voltage and low-power consumption. The FO-LPF structure implemented using this VDDDA structure is compact. It includes three VDDDAs and three grounded capacitors along with two active resistors implemented using MOS transistors. In addition, this filter structure provides electronic tuning of its order and cut-off frequency through the bias current of the active component used. The effects of tracking error and parasitics on the functionality of the proposed FO-LPF were investigated. The VDDDA and filter operate at ±300 mV and dissipate only 207 nW and 663 nW of power, respectively. Thus, the VDDDA structure and filter are suitable for low-voltage and low-power operation. Layouts of the proposed VDDDA as well as the FO-LPF were designed in the Cadence Virtuoso environment. Post-layout simulation results of the designed circuits imply that they are suitable for fabrication. Noise, total harmonic distortion, Monte-Carlo, and PVT analyses were also performed.

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Section: Comparisonmentioning

confidence: 99%

Power-Efficient Electronically Tunable Fractional-Order Filter

Tasneem,

Ranjan,

Paul

et al. 2023

Fractal Fract

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“…It is implemented on the TSMC 0.18 µm CMOS process occupying 0.0015 mm 2 of silicon area with 380.6 µW power consumption. In [21] FO low-pass and high-pass filters based on operational transconductance amplifiers (OTAs) are exhibited. They are designed on the TSMC 0.35 µm CMOS process and consume power up to 47.5 nW depending on the order and type of the filter.…”

Section: Introductionmentioning

confidence: 99%

A Low Power Analog Integrated Fractional Order Type-2 Fuzzy PID Controller

Alimisis,

Eleftheriou,

Georgakilas

et al. 2024

Fractal Fract

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This paper introduces an analog integrated fractional order type-2 fuzzy PID control system. Current approaches frequently depend on energy-intensive embedded digital systems, consuming substantial energy levels ranging from a few μW to mW. To address this limitation we propose a fully analog design offering insights into the potential of analog circuits for powerefficient robust control in complex and uncertain environments. It consists of Gaussian function, min/max, Operational transcoductance amplifier circuits and Resistor-Capacitor networks for the implementation of the fractional-order components. Crafted for operation under a reduced voltage supply (0.6 V), the controller attains minimal power usage (861.8 nW), facilitating uninterrupted, extended-term functioning. Post-layout simulation results confirm the proper operation of the proposed design. The proposed system is designed and simulated using the Cadence IC Suite in a TSMC 90 nm CMOS process.

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“…These methodologies for approximation were proposed by the researchers at various points in time throughout the study. Based on a general filter topology, the work that was done in [18] introduces fractional order low-pass, high-pass, band-pass, and band-reject filter responses at the same circuit utilising low-voltage active elements. Simulation of the designed circuits is performed with Spice software and makes use of the properties of 0.35 µm Taiwan semiconductor manufacturing company (TSMC) complementary metal-oxide semiconductor (CMOS) technology.…”

Section: Introductionmentioning

confidence: 99%

Realization of fractional order lowpass filter using different approximation techniques

Krishna,

Janarthanan

2023

Bulletin EEI

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Many research groups are starting to pay serious attention to the problem of fractional-order circuits. In this paper, a new approach to designing fractional order low-pass filter (FOLPF) is presented. Finding a rational approximation of the fractional Laplace operator sα is a crucial step in the design of fractional order filters. A comparative study of the most widely used approximation techniques named continued fraction expansion (CFE) method and Biquadratic Approximation (RE) method is performed. Then the transfer function of the proposed FOLPF is calculated. Using operational amplifier, the proposed filter is synthesized. The proposed circuit is simulated using Texas instruments TINA software. The results obtained outperform the existing methods.

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A Current Mode Design of Fractional Order Universal Filter

Cited by 7 publications

References 21 publications

Power-Efficient Electronically Tunable Fractional-Order Filter

Power-Efficient Electronically Tunable Fractional-Order Filter

A Low Power Analog Integrated Fractional Order Type-2 Fuzzy PID Controller

Realization of fractional order lowpass filter using different approximation techniques

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