Realizations of Inductive and Capacitive Gyrators

Definitions and realizations of inductive and capacitive gyrators are presented. It is shown that an ideal inductive gyrator may be composed of four voltage-controlled current sources and two capacitors; while an ideal capacitive gyrator may be composed of two voltage-controlled voltage sources, two current-controlled current sources, and two capacitors. Transistors may be used as controlled sources. The lack of inductors makes possible the integration of these gyrator circuits.