This is a simple tool used to calculate the maximum RF exclusion distance for a transmitting antenna based on the AS/NZS 2772.2 standard.
The tool is based on principles provided by ARPANSA, and is used for the far-field region of an antenna. The exclusion zone is a circle and the centre of the circle is at the phase centre of the antenna. The phase centre is the point from which the electromagnetic radiation spreads in an antenna.
It is important to note the limitations:
- It uses the free-space transmission equation
- It does not factor in environmental effects or losses in the system
- It assumes a 100% duty cycle
- It does not factor in the antenna's radiation pattern
This is a free calculator for general purpose usage. You should always consult a professional.
Public Exclusion Zone Calculator
To use the calculator you'll need to know the transmit power of the device you're using, and the peak gain of the antenna it will be connected to. You can choose between a power value in Watts or dBm. The table below will update automatically.