Micropilot FMR67
28
V. 1, Rev. 3, 11-04-2017
Hauser
Beam angle
D
W
D
_
=
2
2
.
.
tan
W
α
α
A0031824
11
Relationship between beam angle α, distance D and beamwidth diameter W
The beam angle is defined as the angle α where the energy density of the radar waves reaches half
the value of the maximum energy density (3dB width). Microwaves are also emitted outside the
signal beam and can be reflected off interfering installations.
