THIS PAPER WILL report on theoretical and experimental investigations to explain the noise behavior of frequency multipliers using nonlinear solid-state elements, particularly step-recovery diodes. It was found that there is a dependence of the strong variations of the output amplitude noise, as well as the output phase noise, on the parameters of the passive filter circuit connected to the diode; Figure 1. It can be proved that the essential noise sources are much more attributable to the driving generator t…
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