V. Rizzoli et al., A RIGOROUS FREQUENCY-DOMAIN APPROACH TO LARGE-SIGNAL NOISE IN NONLINEAR MICROWAVE CIRCUITS, IEEE microwave and guided wave letters, 8(6), 1998, pp. 220-222
The letter introduces a rigorous approach to large-signal noise in non
linear microwave circuits. The analysis is based on the well-known rep
resentation of white noise as a set of uniformly spaced pseudosinusoid
al signals with random phases. The spectral resolution required for a
reliable noise simulation is evaluated by Monte Carlo analysis and is
found to be quite high, so that the resulting nonlinear analysis invol
ves spectra of many tens of thousands of lines, This kind of problem m
ay be efficiently solved by the inexact-Newton harmonic-balance techni
que. With this method, the amplitude of the noise waveforms is arbitra
ry, so that large-signal noise effects may be directly evaluated.