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Hmc988 low frequency spurs

Question asked by matangk on Aug 11, 2017

hi, we have a small independent board with Hmc988 on it, which is programmed by Arduino. The input power is 0-6dBm on 50Ohm input, AC coupled which is within spec. The part programs fine but we see ~180KHz (and harmonics) spurs at the divided output (regardless of input frequency). Is this normal or was the part damaged? The supply line is well filtered.