A new Bi-functional inductor using a voltage differencing transconductance amplifier

In this paper a new method is proposed for realizing active inductors using voltage differencing transconductance amplifier(VDTA). This proposed method employs only one VDTA and one transconductance for designing an active bi-functional inductor which can replace bothpassive floating inductors and grounding inductorsand helps implementing theminto integrated circuits. The number of CMOS transistors can be considerably reduced, and g_m can be eliminated, which can help in reducing the size of the circuit and power consumption. The proposed bi-functional inductor was successfully used in constructing 2 MHz second order bi-quad active bandpass and high filter as an application.