1. A floating immittance emulator circuit, comprising: a first current feedback operational amplifier (CFOA) having first y-, x-, z-, and w-terminals, the first z-terminal being connected to ground; a second CFOA having second y-, x-, z-, and w-terminals, the second z-terminal being connected to the second y-terminal; a third CFOA having third y-, x-, z-, and w-terminals, the third z-terminal being connected to the second x-terminal of the second CFOA; a first impedance having a first lead connected to the first y-terminal of the first CFOA and a second lead connected to the third x-terminal of the third CFOA; a second impedance having a first lead connected to the first x-terminal of the first CFOA and a second lead connected to the third y-terminal of the third CFOA; and a third impedance having a first lead connected to the third y-terminal of the third CFOA and a second lead connected to the third w-terminal of the third CFOA; wherein the emulator circuit emulates immittance between a voltage v i applied to the first y-terminal of the first CFOA and a voltage v 2 applied to the second y-terminal of the second CFOA.