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Flickering out-of-band spurs of AD9364 Tx

Question asked by hguo@gemtorch.com on Feb 29, 2016
Latest reply on May 17, 2016 by hguo@gemtorch.com

We have a customized AD9364 board. By a realtime spectrum analyzer, we found a flickering out-of-band spectrum (some in-band) on 9364 Tx as the attached screen shot.

The Tx output  is a near 0-IF 7.5MHz RFBW QPSK signal,  LO=1435MHz (same situation at other LO).

What is the reason?

 

Tx spectrum1.jpgTx spectrum2.jpg

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