Beam field angle calculator

This calculator computes the beam field angle for a given antenna configuration based on frequency, distance, and gain.

Input Parameters

Calculation Results

Calculation Formula

Beam Width (θ) = 1.414 * √(λ/D) * 10^(gain/10)

Where:
θ = Beam width angle (degrees)
λ = Wavelength (meters) = 300 / Frequency (MHz)
D = Distance (meters)
Gain = Antenna Gain (dBi)

Results

Wavelength (λ):

-

Beam Width (θ):

-

Beam field angle calculator Calculator Usage Guide

Learn how to use the Beam field angle calculator and its working principles

How to use the calculator

  1. Enter the frequency of the beam in MHz (e.g., 900, 1800, 2400).
  2. Enter the distance from the antenna to the receiving point in kilometers.
  3. Enter the antenna gain in dBi.
  4. Click the "Calculate" button to compute the beam width angle.
  5. The results will show the wavelength and the beam width angle in degrees.

Working principle

The beam field angle is calculated using the formula that relates frequency, distance, and antenna gain. The beam width decreases with higher gain and shorter wavelengths (higher frequencies). This calculator helps in determining the coverage area of a beam-based communication system.

Applications

This calculator is useful for:

  • Designing wireless communication systems
  • Optimizing antenna placement
  • Estimating coverage areas for satellite communications
  • RF system design and planning