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

Using the wave representation, a recursive algorithm for noise analysis of a two-port network with an 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 (1981) 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)