Would you happen have phase noise plots at or around 1280 MHz. for the HMC439QS16G? Thanks.
Phase noise of the HMC439QS16G is "residual" or "additive" phase noise and scales at 10*LOG(Fo / Fm). At an input drive level of 0dBm at a 10kHz offset the noise at 1280MHz measures -153dBc/hz. Using the equation we find that at this same offset the phase noise will be 10LOG(1280MHz / 100MHz) = 11.1dBc/hz worse or 141.9dBc/hz. Please use this equation and the datasheet to derive the phase noise at any other offsets that may be needed.
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