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Abstract
In this paper, two new general topologies for realizing voltage-mode (VM)/current-mode (CM) first-order all-pass Alter transfer functions (TFs) are presented. The proposed topologies use single dual-X second-generation current conveyor (DXCCII) and three impedances Z1, Z2 and Z3. Based on the selection of Z1, Z2 and Z3, new VM and CM all-pass Alters with unity or variable gains are obtained. The proposed VM/CM filters have high-input/high-output impedances which provide easy cascading at their input/output terminals, respectively. Non-ideal gain and parasitic impedance effects, associated with actual DXCCII implementation, on the performance of the developed topologies are also included. Finally, simulation program with integrated circuit emphasis (SPICE) simulation results based on level 49, 0.25 μm TSMC complementary metal-oxide-semiconductor (CMOS) technology parameters are given to confirm the theory.
Additional information
Notes on contributors
Shahram Minaei
Shahram Minaei received the B.Sc. degree in Electrical and Electronics Engineering from Iran University of Science & Technology, Tehran, Iran, in 1993 and the M.Sc. and Ph.D. degrees in electronics & communication engineering from Istanbul Technical University, Istanbul, Turkey, in 1997 and 2001, respectively. He is currently a Professor in the Department of Electronics & Communication Engineering, Dogus University, Istanbul, Turkey. He has more than 80 publications in scientific journals or conference proceedings. His current field of research concerns current-mode circuits and analog signal processing.
Dr. Minaei is a senior member of the IEEE, an associate editor of the Journal of Circuits, Systems and Computers (JCSC), and an area editor of the International Journal of Electronics and Communications (AEÜ). E-mail: [email protected]
Erkan Yuce
Erkan Yuce was born in 1969 in Nigde, Turkey. He received the B.Sc. degree from Middle East Technical University, the M.Sc. degree from Pamukkale University and the PhD. degree from Bogazici University all in Electrical and Electronics Engineering in 1994, 1998 and 2006, respectively. He is currently an Assistant Professor at the Electrical and Electronics Engineering Department of Pamukkale University. His current research interests include analog circuits, active filters, synthetic inductors and CMOS based circuits. He is the author or co-author of about 80 papers published in scientific journals or conference proceedings. E-mail: [email protected]