Design of Amplifiers with Potentially Unstable Transistors

Abstract

Paper presents overview of methods used for stabilization of high frequency and microwave transistors amplifiers using potentially unstable transistors. The S-parameter approach is used for analysis of the amplifier stability over the required bandwidth. The treatment takes in consideration the influence of the operating conditions on noise, gain and mismatch for the particular application. Because the subject is treated in the literature only briefly, the summary presented in this short paper shows to the designer methods used in practical design.