Antenna Downtilt Coverage Radius Calculator | RF Tool

The Antenna Downtilt Coverage Radius Calculator helps network engineers determine how lowering or tilting an antenna’s main lobe affects the geographical coverage area. Downtilt alters the elevation angle of the antenna pattern, which has a significant impact on signal reach, cell overlap and interference.

EXAMPLE:

• INPUTS:

  • Antenna Height in meters (input1) : 40
  • Downtilt Angle in degrees (input2) : 8
  • Beamwidth Angle in degrees (input3) : 10

• OUTPUT:

  • Inner Radius Distance in meters (output1) : 173.25
  • Outer Radius Distance in meters (output2) : 763.24

Antenna Downtilt Formula

Benefits/Applications

• Optimizes cellular coverage: Ensures signal reaches intended user zones without causing interference to other cells.
• Improves network capacity: Proper downtilt reduces coverage holes and overlapping footprints.
• Reduces interference: Particularly helpful in dense urban environments where multiple cells operate nearby.
• Planning & deployment: Useful during site surveys and network planners’ design phase.

Summary:

Use this calculator to estimate how different downtilt angles affect your antenna’s coverage radius, enabling better planning, efficient signal distribution and reduced interference for wireless systems.