Tunable Current-Mode Multifunction Filter Using Universal Current Conveyors

This paper presents the simulations results in comparison with the measured results of the practical realization of the multifunctional second order frequency filter with a Digitally Adjustable Current Amplifier (DACA) and two Dual-Output Controllable Current Conveyors (CCCII +/− ). This filter is designed for use in current mode. The filter was designed of the single input multiple outputs (SIMO) type, therefore it has only one input and three outputs with individual filtering functions. DACA element used in a newly proposed circuit is present in form of an integrated chip and the current conveyors are implemented using the Universal Current Conveyor (UCC) chip with designation UCC-N1B. Proposed frequency filter enables independent control of the pole frequency using parameters of two current conveyors and also independent control of the quality factor by change of a current gain of DACA.

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“…The simulations were performed in OrCAD with simulation models specified in [8,23]. Capacitors values are constant: C 1 = 780 pF, C 2 = 120 pF.…”

Section: Comparison Of Simulation and Measurement Resultsmentioning

confidence: 99%

Digitally Controllable Current Amplifier and Current Conveyors in Practical Application of Controllable Frequency Filter

Polák

Jeřábek

Langhammer

et al. 2016

Journal of Electrical Engineering

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“…Many authors have proposed the multifunction filters [10][11][12][13][14][15][16][17][18][19][20][21]. Unfortunately, these reported circuits suffer from one or more of the following weaknesses:…”

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confidence: 99%

An active-only electronically controllable current-mode multifunction filter using CCCFTAs

Lawanwisut

Comedang

Siripruchyanun

2013

2013 36th International Conference on Telecommunications and Signal Processing (TSP)

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This article presents a current-mode multifunction filter performing completely standard function: low-pass, highpass, band-pass, band-reject and all-pass functions. The features of the circuit are that: the quality factor and pole frequency can be tuned by DC controlled bias current: the circuit description is very simple, it comprises only active elements, which are 2 current controlled current follower transconductance amplifiers (CCCFTAs) and 2 operational amplifiers (OAs). The proposed circuit is very suitable to further develop into an integrated circuit architecture. The PSpice simulation results are shown.. The total power consumption is approximately 23.1mW at ±5V supply voltages. The given results agree well with the theoretical anticipation.

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OFC based high output impedance current mode SIMO universal biquadratic filter

Parveen

2011

2011 International Conference on Multimedia, Signal Processing and Communication Technologies

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Tunable Current-Mode Multifunction Filter Using Universal Current Conveyors

Cited by 5 publications

References 23 publications

Digitally Controllable Current Amplifier and Current Conveyors in Practical Application of Controllable Frequency Filter

Digitally Controllable Current Amplifier and Current Conveyors in Practical Application of Controllable Frequency Filter

An active-only electronically controllable current-mode multifunction filter using CCCFTAs

OFC based high output impedance current mode SIMO universal biquadratic filter

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