Design of Higher-Order Fractional Filters With Fully Controllable Frequency Characteristics

Design of Higher-Order Fractional Filters With Fully Controllable Frequency Characteristics

Higher-order fractional filters with fully controllable frequency characteristics are realized in this work, after fitting the filter’s magnitude response data using a minimum-phase state-space model. Subsequently, rational integer-order transfer functions are derived and implemented usin...

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Bibliographic Details
Main Authors: Julia Nako, Costas Psychalinos, Ahmed S. Elwakil, Drazen Jurisic
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Access
Subjects:
Fractional-order filters
approximation techniques
Butterworth filters
Chebyshev filters
operational transconductance amplifiers
field programmable analog arrays
Online Access:https://ieeexplore.ieee.org/document/10113218/
Description
Summary:Higher-order fractional filters with fully controllable frequency characteristics are realized in this work, after fitting the filter’s magnitude response data using a minimum-phase state-space model. Subsequently, rational integer-order transfer functions are derived and implemented using as active elements: a) Operational Transconductance Amplifiers (OTAs) and b) a Field Programmable Analog Array (FPAA) device. The realized filters enjoy electronic adjustability of their type, order, and characteristic frequencies while being easily validated on the digitally programmable FPAA platform.
ISSN:2169-3536

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