ANALYTICAL MODEL OF HIGH-FREQUENCY NOISE OF SCHOTTKY-BARRIER FREQUENCY MULTIPLIERS

摘要

An analytical model of the high-frequency noise of frequency multipliers based onnSchottky-barrier diodes (SBD) operating in series with a parallel resonant circuit undernlarge-signal conditions is developed. Such a model, on one hand, takes into account thenmain intrinsic features of the SBD noise related to shot-noise, returning carriers, plasmanresonance at n+n homojunctions, and, on the other hand, it incorporates the SBD noisenspectrum modifications induced by the output resonant circuit. It is shown that the SBDnembedding into an external circuit can produce the appearance of an extra noise due tonup-down conversion of the fluctuations of the voltage drop between the SBD terminalsnoriginated by a periodic modulation of the varactor capacitance by the pumping signal.