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Fresnel Zone Radius Calculator

wireless fresnel zone radius calculator antenna line of sight

This page provides a Fresnel Zone Radius Calculator for determining the optimal Fresnel zone, crucial for achieving peak performance in wireless links between two Line-of-Sight (LOS) antennas. It offers two calculators based on different equations for calculating the Fresnel zone radius.

Fresnel Zone Radius Calculator (Equation 1)

Inputs

Outputs

This calculator uses the first equation to determine the Fresnel zone radius.

EXAMPLE #1:

  • INPUTs:
    • Distance = 10 km
    • Frequency = 2.4 GHz
  • OUTPUTs:
    • Fresnel Zone Radius = 17.67 meters
    • 80% of Fresnel Zone Radius = 14.14 meters

Fresnel Zone Radius Calculator (Equation 2)

Inputs

Outputs

This calculator uses the second equation to determine the Fresnel zone radius.

EXAMPLE #2:

  • INPUTs:
    • Distance = 100 miles
    • Frequency = 2.4 GHz
  • OUTPUTs:
    • Fresnel Zone Radius = 232.54 feet
    • 80% of Fresnel Zone Radius = 186.03 feet

Fresnel Zone Radius Calculator Equation

The following equation is used to calculate the Fresnel Zone Radius. The calculators above are based on these two equations:

Fresnel zone radius calculator equation