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