Abstract
This paper presents a new nth-order current-mode multifunction filter based on current differencing transconductance amplifiers (CDTAs). The proposed circuit, which adopts n current differencing transconductance amplifiers and n grounded capacitors, can realize current responses of low-pass, band-pass and high-pass, without component-matching conditions and changing the topology. The filter also offers the features of low input and high output impedances and enjoys the simple configuration which is suitable for integrated circuit (IC) fabrication. The proposed third-order filter is simulated using PSPICE to confirm the presented theory, and the results have good agreement with the theoretical analysis. The influences of the CDTA non-idealities are also discussed.
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Acknowledgments
This work is supported by the Hunan Province natural science foundation of China [NO.14JJ7026] and the Open Fund Project of innovation platform in Hunan Universities [No.13K015], and the authors would like to thank the editors and anonymous reviewers for providing valuable comments which helped in improving the manuscript.
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Cao, M., He, H., Luo, R., Wen, L. (2015). Nth-Order Multifunction Filter Employing Current Differencing Transconductance Amplifiers. In: Wang, G., Zomaya, A., Martinez, G., Li, K. (eds) Algorithms and Architectures for Parallel Processing. ICA3PP 2015. Lecture Notes in Computer Science(), vol 9532. Springer, Cham. https://doi.org/10.1007/978-3-319-27161-3_1
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