Hello TI,
As you have stated in the document "Introduction to the DSP Subsystem in the IWR6843": The IWR6843 device is the industry's first fully-integrated 57 GHz to 64 GHz, radar-on-a-chip solution for industrial radar applications.
As the antenna is constructed for 59.95 GHz (lambda/2 = 2.5mm) and e.g. RFbeam has V-MD3 61GHz radar based on IWR6843, I believe it should be supported.
Do you have any info?
Thank you, Lukas