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.
- Half the side to side beamwidth, if you are concerned to determine the
offset angle from the beam centre.
- The on-axis gain, relative to an isotropic omni-directional antenna.
The results are approximate beyond the -3 dB contour.
Maximum main beam gain assumes an aperture efficiency of 0.65
The shape of the main beam assumes that the edge illumination of the dish is
-10 dB down.
Any problems or comments, please e-mail me
Eric Johnston This
calculator is copyright © 2007 Satellite Signals Ltd
Navigation links:
Inclined orbit operation
Satellite link budget
Dish pointing
Focal
length of parabola
Measuring profile accuracy and correcting dish distortion
Dish distortion due to heavy
feed assembly
Sub reflector
adjustments
Original : 10 Oct 2007, amended 16 Dec 2007 |