Resistor-less Current-mode Universal Biquad Filter Using CCTAs and Grounded Capacitors

  title={Resistor-less Current-mode Universal Biquad Filter Using CCTAs and Grounded Capacitors},
  author={Thanaset Thosdeekoraphat and Saksit Summart and Charinsak Saetiaw and Samran Santalunai and Chanchai Thongsopa},
Abstract—This article presents a current-mode universal biquadratic filter. The proposed circuit can apparently provide standard functions of the biquad filter: low-pass, high-pass, bandpass, band-reject and all-pass functions. The circuit uses 4 current controlled transconductance amplifiers (CCTAs) and 2 grounded capacitors. In addition, the pole frequency and quality factor can be adjusted by electronic method by adjusting the bias currents of the CCTA. The proposed circuit uses only… CONTINUE READING
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