This book provides comprehensive coverage of the major gyrator circuits, simulated inductors and related synthetic impedances. It offers a thorough review of research in this field to date, and includes an exceptionally wide range and number of circuit examples, along with their relevant design equations, limitations, performance features, advantages and shortcomings. The book provides useful information for academics wishing to keep up-to-date with developments in the design of gyrators and other related synthetic impedances, and can also be used as a reference guide by electronics engineers looking to select appropriate circuits for specific applications.