AD9361 - DC Leakag(LO) Present at TX

Dear Fellow Engineers

   i am new to the engineering community and currently working with AD9361. Through out my research so far, i have seen the Presence of DC Offset (DC Leakage from Mixer inside ad9361) on the TX side as shown below in attachment. This is the something that i would like to remove or minimize even more so that it is negligible.  Any helpful feed back or suggestions will be greatly appreciated.  Thanks

DC is at MR (Unwanted)  and M1 is just a single tone.

Parents
  • Yes dear, i am using ZedBoard with AD9361(FMCOMMS3-EBZ) for testing Purpose. i am also using Signal view to observe the spectrum on the TX1. Through ssh, i am able to access OSC and put on a single tone as shown below. Now when you say relative, does that mean it has some sort of relation to the power of signal? Also do you think that there is any other way(For example using Notch filter or Modifying Registers via SPI bust) to minimize DC even further if so, how?

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  • Yes dear, i am using ZedBoard with AD9361(FMCOMMS3-EBZ) for testing Purpose. i am also using Signal view to observe the spectrum on the TX1. Through ssh, i am able to access OSC and put on a single tone as shown below. Now when you say relative, does that mean it has some sort of relation to the power of signal? Also do you think that there is any other way(For example using Notch filter or Modifying Registers via SPI bust) to minimize DC even further if so, how?

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