Abstract
The paper presents a series of basic circuits based on CFTAs (current follower transconductance amplifier), which contain amplifier, lossless integrator, first-order universal current-mode filter, simulation resistor, negative resistance converter, gyrator, capacitor multiplier, and frequency-dependent negative resistance circuit. Having used canonic number of grounded capacitors and resistors, the circuits are easy to be integrated and the parameters of the circuits can be adjusted electronically by tuning bias currents of the CFTAs. It is noted that the results of circuit simulations are in agreement with theory.
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