AnsweredAssumed Answered

AD9361 Tx quadrature calibration.

Question asked by FreddyS on Apr 25, 2014
Latest reply on Apr 28, 2014 by tlili

Hi,

From my customer:

We noticed that in order to get good calibration results I need to connect the Tx Baluns single ended output to 50Ohm and perform the Tx quadrature calibration.

 

If we leave the Tx Baluns single ended output OPEN and perform the Tx quadrature calibration we get poor results such as -20dBc from the signal.

 

My question is why I need to connect 50Ohm load to the Tx Baluns single ended output in order to get good  Tx quadrature calibration results ?

Thanks

Freddy

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