State-Space Synthesis of Current-Mode First-Order Log-Domain Filters

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Turkish Journal of Electrical Engineering and Computer Science
Volume:14 Issue:3
State-Space Synthesis of Current-Mode First-Order Log-Domain Filters

State-Space Synthesis of Current-Mode First-Order Log-Domain Filters

Authors : Ali KIRÇAY, Uğur ÇAM

Pages : 399-416

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This paper proposes current-mode first-order log-domain filters, which are systematically derived using the state-space synthesis procedure. First-order low-pass, high-pass, and all-pass responses are obtained with different circuit types. The filter circuits have very simple structures, since they use only bipolar junction transistors insert ignore into journalissuearticles values(BJTs); and a grounded capacitor. They can be electronically tuned by changing an external current. The filters have a greater bandwidth due to inherently current-mode and log-domain operation. PSPICE simulations are given to confirm the theoretical analysis.
Keywords : Log domain filters, current mode circuits, state space synthesis

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