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Realization of Fractional-Order Current-Mode Multifunction Filter Based on MCFOA for Low-Frequency Applications
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Realization of Fractional-Order Current-Mode Multifunction Filter Based on MCFOA for Low-Frequency Applications
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Journal Article
Realization of Fractional-Order Current-Mode Multifunction Filter Based on MCFOA for Low-Frequency Applications
2025
Overview
The present work proposes a novel fractional-order multifunction filter topology in current-mode (CM), which is designed based on the Modified Current Feedback Operational Amplifier (MCFOA). The proposed design simultaneously generates fractional-order low-pass (FO-LPF), high-pass (FO-HPF), and band-pass (FO-BPF) outputs while utilizing an optimized set of essential active and passive elements, thereby ensuring simplicity, cost efficiency, and compatibility with integrated circuits (ICs). The fractional-order feature allows precise control over the transition slope between the passband and the stopband, enhancing design flexibility. PSpice simulations validated the filter’s theoretical performance, confirming a 1 kHz cut-off frequency, making it suitable for VLF applications such as military communication and submarine navigation. Monte Carlo analyses demonstrate robustness against parameter variations, while a low THD, a wide dynamic range, and low power consumption highlight its efficiency for high-precision, low-power applications. This work offers a practical and adaptable approach to fractional-order circuit design, with significant potential in communication, control, and biomedical systems.
Publisher
MDPI AG
Subject
