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image of Voltage-Mode First-Order All-Pass Filter With Active Tuning
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Abstract

In this paper, a voltage-mode first-order all-pass filter using three passive components (one capacitor, two resistors) and one active building block, the second-generation voltage conveyor (VCII) is presented. The proposed design's ideal and non-ideal behaviors are examined to ensure it functions in real-world environments. The effects of variations in capacitance and temperature on the performance of the proposed structure are also analyzed and verified through Monte Carlo simulations. The proposed device gains a patented feature of tunability when an NMOS transistor replaces a passive resistor with an active equivalent design. Moreover, a second-order all-pass filter is included to test the design's practical viability. The circuit validation is conducted using 0.18 µm CMOS process parameters with a ±0.9 V power supply, using the PSPICE simulation tool, and also validated by experimental setup using IC AD844.

© 2024 The Author(s). Published by Bentham Science Publishers
© 2024 The Author(s). Published by Bentham Science Publishers. This is an open access article published under CC BY 4.0 https://creativecommons.org/licenses/by/4.0/legalcode.
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/content/journals/eng/10.2174/0118722121335478241016013655
2024-12-09
2025-05-31

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/content/journals/eng/10.2174/0118722121335478241016013655
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Voltage-Mode First-Order All-Pass Filter With Active Tuning
Bentham Science Publishers ; https://doi.org/10.2174/0118722121335478241016013655
/content/journals/eng/10.2174/0118722121335478241016013655
/content/journals/eng/10.2174/0118722121335478241016013655
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  • Article Type:     Review Article
Keywords: voltage-Mode ; VCII ; first-order ; All-Pass Filter ; tunability ; monte carlo simulation

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