Beam Expansion of Blind Spot Detection Radar Antennas Using a Radome with Defected Corrugated Inner Wall

Figure 19

Measured radiation patterns of Ch. 3 at 76.5 GHz when radomes having different inner surfaces are used.

(a) No radome

(b) Smooth-walled radome

(c) Nondefected corrugated radome

(d) Defected corrugated radome