On the realization of high-order current-mode filter employing current controlled conveyors
Computers and Electrical Engineering
Universal current-mode filters and parasitic impedance effects on the filter performances
International Journal of Circuit Theory and Applications
A CMOS digitally programmable filter technique for VLSI applications
Analog Integrated Circuits and Signal Processing
Using MOS current dividers for linearization of programmable gain amplifiers
International Journal of Circuit Theory and Applications
Universal resistorless current-mode filters employing CCCIIs
International Journal of Circuit Theory and Applications - Cellular Wave Computing Architecture
Electronically controlled multiphase sinusoidal oscillators using current amplifiers
International Journal of Circuit Theory and Applications
Design of current-mode MOSFET-C filters using OTRAs
International Journal of Circuit Theory and Applications
Log-domain synthesis of nth order universal filter
Analog Integrated Circuits and Signal Processing
International Journal of Circuit Theory and Applications
A mixed-mode KHN-biquad using DVCC and grounded passive elements suitable for direct cascading
International Journal of Circuit Theory and Applications
Generation and classification of Kerwin–Huelsman–Newcomb circuits using the DVCC
International Journal of Circuit Theory and Applications
Higher-order immittance functions using current conveyors
Analog Integrated Circuits and Signal Processing
Current-mode biquadratic filter using DO-CCCDBAs
International Journal of Circuit Theory and Applications
Current-mode wave field programmable analogue arrays
International Journal of Circuit Theory and Applications
Digitally programmable high-order current-mode universal filters
Analog Integrated Circuits and Signal Processing
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A family of new high-order filters capable of providing all filter functions without changing the circuit topology is proposed for integrated circuit applications. The proposed filters are based on simple active elements, namely, digitally controlled current amplifiers (DCCAs) and unity gain voltage buffers (VBs). Gains of DCCAs are digitally programmed to adjust the coefficients of transfer functions. R2R ladders are also utilized to increase the tuning flexibility of the proposed filters. A filter replicating the famous KHN biquad is extended to realize general nth-order filters. Comparison with the recent works shows that the proposed approach results in more efficient realizations compared with its counterparts based on other current-mode active elements. Experimental results obtained from a fourth-order filter implemented using devices fabricated in a 0.35-µm CMOS process are provided. Copyright © 2011 John Wiley & Sons, Ltd.