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Higher harmonics of ADF4351 are very weakly suppressed

Question asked by dysi on Apr 16, 2015
Latest reply on Apr 16, 2015 by rbrennan

We have ordered two times an EVAL – ADF4351EB1Z. 

Unfortunately uneven harmonics are very weakly suppressed. The third harmonic may even be stronger than the fundamental output (see attachment). This problem occurs in the case of both products using your software (Analog Devices ADF435x Software).


Is it a normal phenomenon or can we take any precautions in order to prevent this problem? 

Thank you for your help!

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