Low-Cost Lens Antenna Design for Microwave Moisture Detection

Figure 5

Antenna electric field radiation patterns: (a) y-z plane radiation patterns at 5 GHz; (b) x-y plane radiation patterns at 5 GHz; (c) y-z plane radiation patterns at 5.8 GHz; (d) x-y plane radiation patterns at 5.8 GHz; (e) y-z plane radiation patterns at 6 GHz; (f) x-y plane radiation patterns at 6 GHz.

(a)

(b)

(c)

(d)

(e)

(f)