Study of active inductors with suspendance analysis

Abstract

Finding node admittances with suspendance analysis is introduced in this paper. First, all dependent sources in a circuit are transformed to voltage controlled current sources. Second, the circuit determinant is recursively expanded by shunt followed by sequential passive elements in an order that yields the shortest sub-determinant lengths. Third, the contributions of cross coupled sources (if any exist) are added. A four-node active inductor is analyzed and characterized in this paper. Results fully match with those obtained from Spice simulation verifying the effectiveness of suspendance analysis.