Abstract: Microwave active inductor^[1,2] could be realized in general by a capacitor-loa ded two port active inverter network. This kind of inductor has its one end connected to ground. Active floating inductor can be designed theoretically by two inverters and a parallel capacitor inserted between them, but it isn't useful in practice due to its complex configuration and its relatively large size. In this paper a simple method of the design of actice floating inductor which is based on the active grounded inductor is proposed. This method may be of importance in synthesizing microwave monolithic integrated circuits (MMIC).

Key words: grounded inductor, active inductor, active inverter, MMIC