Simple approach for synthesis of fractional-order grounded immittances based on OTAs

This paper briefly introduces an approach towards a simple synthesis of the grounded fractional-order immittances. Proposed method is based on multiplication of partial grounded immittance emulators with mutually independent electronic control of zero and pole location. General structure is based on the operational transconductance amplifiers (OTAs) while practical realization implements the so-called diamond transistors OPA860. Workability of the proposed concepts in the frequency domain was verified in Orcad PSpice simulations.