Electronically Tunable Current-Mode SIMO/MISO Universal Biquad Filter using MO- Cccctas

This paper presents an electronically tunable current-mode SIMO/MISO universal biquad filter using multi- output current controlled current conveyor transconductance amplifiers (MO-CCCCTAs). The proposed filter employs only two CCCCTAs and two grounded capacitors. The proposed configuration can be used as either single input multi-output (SIMO) or multi (three) input single output (MISO) current mode filter. It can realize all five different standard filter functions i.e. low-pass (LP), band-pass (BP), high-pass (HP), band-reject (BR) and all-pass (AP). The circuit enjoys an independent current control of pole frequency and bandwidth. Both the active and passive sensitivities are no more than unity. The validity of proposed filter is verified through computer simulations using PSPICE, the industry standard tool.

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