US Patent 11283162 Transitional waveguide structures and related sensor assemblies

Antenna assemblies for vehicles, such as RADAR sensor antenna assemblies. In some embodiments, the assembly may comprise an antenna block defining a waveguide groove and an adapter portion comprising a ridge. The ridge may taper or otherwise transition in height and/or width to facilitate a transition between two adjacent elements of the assembly, such as two adjacent waveguide structures comprising ridges having different cross-sectional dimensions.