Stability analysis of multi-transistor microwave power amplifiers

Abstract

Stability analysis of structures composed of transistors “paralleled” by means of power dividers/combiners is a keypoint in the design of MMIC power amplifiers. However, techniques to cope with this problem are quite rare in the literature and standard, straightforward tools are usually not available in CAD programs. A new simplified approach, hich can be applied using conventional linear tools for microwave circuit analysis, is proposed in this paper.