Recursive algorithm for noise analysis of a two-port network with arbitrary internal topology using the S-wave approach

Abstract

Using the wave representation, a recursive algorithm for the noise analysis of a two-port network with arbitrary internal topology is presented. In contrast with past analyses, the evaluation of the 2N×2N matrix inversion is avoided, which results in less computer storage and reduced computation time. The approach unifies Gupta's multiconnection method for signal analysis with the noise analysis. To demonstrate the accuracy of this method, the noise of a 1-7 GHz 10 dB distributed amplifier is calculated. The results obtained are in excellent agreement with the simulated results using the HP Microwave Design Software (MDS).