DXB is somewhat rare variant of DXF format used primarily for exchange purposes and unfortunately, rarely supported in CAD software. AutoCAD supports DXF/DXB format just fine though, so this is probably the software you have to use if you want to convert your CAD drawings to it, via dwg to dxb conversion.
This topic is actually covered in some online guides and tutorials, some can be even found on YouTube.
Updated: November 3, 2023