K. Takagi et al., PHASE NOISE AND A LOW-FREQUENCY NOISE-REDUCTION METHOD IN BIPOLAR-TRANSISTORS, I.E.E.E. transactions on electron devices, 44(7), 1997, pp. 1180-1181
A low-frequency amplitude and phase-noise measuring system was set up
and both noises were measured. It is noted they were correlated in a b
ipolar transistor. Both noises were from the same origin: diffusion co
efficient fluctuation in the base. A demonstration was carried out on
the amplitude noise reduction by using the correlation between both no
ises.