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US 9,548,721 B1Granted
Floating immittance emulator
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMuhammad Taher Abuelma'atti, Sagar Kumar Dhar
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Abstract
The floating immittance emulator is presented in four embodiments in which four new topologies for emulating floating immittance functions are detailed. Each circuit uses three current-feedback operational-amplifiers (CFOAs) and three passive elements. The present topologies can emulate lossless and lossy floating inductances; capacitance, resistance, and inductance multipliers; and frequency-dependent positive and negative resistances.
Claims6
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 y-terminal of the second CFOA being connected to the first z-terminal of the first CFOA;
- a third CFOA having third y-;
- x-, z-, and w-terminals, the third z-terminal being connected to first x-terminal of the first CFOA, and the third y-terminal being connected to the second w-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 third w-terminal of the third CFOA and a second lead connected to the second z-terminal of the second CFOA;
- and
- a third impedance having a first lead connected to the third w-terminal of the third CFOA and a second lead connected to the second x-terminal of the second CFOA;
- wherein the emulator circuit emulates immittance between a voltage v1 applied to the first y-terminal of the first CFOA and a voltage v2 applied to the second y-terminal of the second CFOA.
6 more elements
Dependencies are inferred from the claim text.