Premium
Universal current‐mode filters and parasitic impedance effects on the filter performances
Author(s) -
Yuce Erkan,
Minaei Shahram
Publication year - 2007
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.418
Subject(s) - spice , electrical impedance , filter (signal processing) , electronic engineering , capacitor , low pass filter , interconnection , high pass filter , parasitic element , active filter , band stop filter , output impedance , engineering , computer science , electrical engineering , voltage , telecommunications
Abstract In this letter, two universal current‐mode (CM) filters for simultaneously realizing low‐pass, band‐pass and high‐pass characteristics are proposed. Both of the presented filters can also realize notch and all‐pass responses with interconnection of the relevant output currents. They employ second‐generation current‐controlled conveyors (CCCIIs) and only grounded capacitors. They also have low active and passive element sensitivities along with electronically adjustable angular resonance frequency (ω 0 ) and quality factor ( Q ). Based on the first developed filter, the parasitic impedance effects of the conveyors on the filter performances are investigated in detail. Simulation results using SPICE simulation program are included to verify the theory. Copyright © 2007 John Wiley & Sons, Ltd.