Antenna beamwidth calculator
Enter the diameter of your parabolic dish in m (metres) and the operating frequency in GHz (Gigahertz)
A typical VSAT is 1.2m diameter and transmits at 14 - 14.5 GHz
The calculation results are:
. The total side to side beamwidth of the antenna main beam.
The results are increasingly approximate beyond the -3 dB contour. The first null may appear at an angle off the boresight similar the the -3 dB full beamwidth.
Any problems or comments, please e-mail me
This calculator is copyright (c) 2007 Satellite Signals Ltd
Original : 10 Oct 2007. Amended 9 April 2012 to include the possibility of altering the efficiency, in the range 0.6 to 0.8
Page last updated 2 Sept 2015