Distributed amplification: A new approach

A general formula is derived for gain of a distributed amplifier using nonuniform lines but with image impedance match at each connection. A study of the gain formula shows that the rise of gain can be eliminated by having different propagation functions for the sections. Thus a new method of constructing amplifiers having constant gain is obtained. The new amplifier also shows pronounced improvement in transient response. In order to verify some of the theoretical predictions, an experimental amplifier of this type was built, and its characteristics studied. It is found that the theoretical calculations and the experimental results are nearly matched.