Use of Transistor-Simulated Inductance as an Interstate Element in Broadband Amplifiers

The properties of a transistor in the inverted common-collector connection, and the use of this connection as an interstage element in broadband amplifiers, are described. A simple amplifier synthesis procedure using a T model of the transistor, and experimental results obtained with a VHF amplifier, are presented. An extension of the synthesis using y-parameter characterization is also described; this procedure is useful in the synthesis of amplifiers consisting of many stages or when the validity of the simple T model is questionable. The use of the simulated inductance of the inverted common-collector connection in monolithic integrated circuits is considered and design examples of monolithic microwave amplifiers are given.