Current-Mode Active-C filter employing reduced number of CCCII+s
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CitationMinaei, S., & Yüce, E. (2007). Current-Mode Active-C filter employing reduced number of CCCII+s. Journal of Circuits Systems and Computers, 16(4), 507-516. http://dx.doi.org./10.1142/S0218126607003782
In this paper, a universal current-mode second-order active-C filter for simultaneously realizing low-pass, band-pass and high-pass responses is proposed. The presented filter employs only three plus-type second-generation current-controlled conveyors (CCCII+s). This filter needs no critical active and passive component matching conditions and no additional active and passive elements for realizing high output impedance low-pass, band-pass and high-pass characteristics. The angular resonance frequency (omega(0)) and quality factor (Q) of the proposed resistorless filter can be tuned electronically. To verify the theoretical analysis and to exhibit the performance of the proposed filter, it is simulated with SPICE program.