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High Harmonics at ADL5387's IF port

Question asked by plkmn3 on Dec 2, 2013
Latest reply on Dec 3, 2013 by peng.chen



In the datasheet of ADL5387 we saw the IIP3 spec is 30dBm, that is means if the input signal is 0 dBm, then the output harmnic should lower than -60 dB compare to the fundamental component. But we got a much higher harmonic level, about -50 dB than the fundamental . we don't know what's wrong, please help us.