User manual

AP User Manual January 2004
Software Release 4.1
5.2 GENERAL RF CONSIDERATIONS
The network planner must account for the following general characteristics of RF transmission and
reception.
5.2.1 Vertical Beam Width
The transmitted beam in the vertical dimension covers more area beyond the beam center. The
Canopy System Calculator page
BeamwidthRadiiCalcPage.xls automatically calculates the radii of
the beam coverage area. Figure 12 displays an image of this file.
Canopy™ System
Calculator
Automatically calculate
Inner Radius of Vertical Beam Width
Outer Radius of Vertical Beam Width
Distance from near -3 dB to far -3 dB
from known
Angle of Antenna Downward Tilt
Elevation of Antenna
Vertical Beam Width
Elevation of antenna (meters)
Elevation of antenna (feet)
Angle of antenna downward tilt (from 0-degree horizontal)
Angle of vertical beam width (from -3 dB to -3 dB)
Inner radius of vertical beam width (kilometers)
Outer radius of vertical beam width (kilometers)
Distance from near -3 dB to far -3 dB (kilometers)
Inner radius of vertical beam width (miles)
Outer radius of vertical beam width (miles)
Distance from near -3 dB to far -3 dB (miles)
Determinants
Results
Enter Values
Read Values
Figure 12: Canopy System Calculator page for beam width
Issue 5 Page 41 of 102