Abstract
This paper proposes a new current-mode current-controlled single-input multiple-output type universal filter using non-inverting and inverting second generation current-controlled conveyors (CCCII(±)s). The proposed circuit employs four CCCII(±)s and two grounded capacitors, and it can simultaneously realize lowpass, bandpass, highpass, bandstop and allpass filter outputs. The circuit offers an independent electronic control of the natural angular frequency (ω0) and quality factor (Q) by means of adjusting the bias current of the CCCII(±)s. The parameter sensitivities are all very low. Moreover, a high Q-value filter can be easily obtained by adjusting the ratio of two bias currents. PSPICE simulation results at the natural frequency of 1.27 MHz are given to demonstrate the advantages of the proposed circuit.
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