New active gyrator circuit suitable for frequency-dependent negative resistor implementation

Abstract

Abstract This paper presents two active gyrator implementations employing only two positive-type current conveyors (CCII+) and an additional buffer, which are also realisable with two current feedback op-amps (CFOA). The circuits are constructed using four basic building blocks. One circuit is found to be identical to a previously presented circuit, the other is new. An FDNR (frequency-dependent negative resistor) employing only grounded capacitors is realised with the proposed configuration. An application example and simulation results are included to verify the theory.