Analog Integrated Circuits and Signal Processing

, Volume 50, Issue 2, pp 137–139

Universal voltage-mode filter using only plus-type DDCCs


DOI: 10.1007/s10470-006-9005-9

Cite this article as:
Chen, HP. Analog Integr Circ Sig Process (2007) 50: 137. doi:10.1007/s10470-006-9005-9


Despite the extensive literature on current conveyor-based voltage-mode universal biquads with single input and multiple outputs, no filter circuit has been reported to simultaneously achieve all of the advantageous features: (i) employment of only two differential difference current conveyor (DDCC), (ii) employment only two grounded capacitors, (iii) employment only three resistors, (iv) simultaneously realize voltage-mode low-pass, band-pass, high-pass, notch and all-pass filter signals from the five output terminals, respectively, (v) orthogonal control of ωo and Q, (vi) low input impedance and can be cascadable (vii) no need to employ inverting type input signals, and (viii) no need to impose component choice except realizing the all-pass filter signal.


Active filtersCurrent conveyorsAnalogue electronics

Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Electronic EngineeringDe-Lin Institute of TechnologyTucheng CityTaiwan