Hi @gmichel ,
Yes, it is a known problem for both DW3000 and DW1000 chipsets.
We have a solution to mitigate this problem and will be released in the next SDK. For now, you can try to choose the TX power settings which have no LO leakage visible. Because most of the applications require a high TX power setting to satisfy the -41.3 dBm / MHz limit.
Moreover, this leakage has no impact on the receiver side but may cause some issues when you calibrate the TX power level.
Let us know if you have any issues or progress on this topic.
Kind regards,
Emre