AntennaWise uses state-of-the-art software to predict and analyze potential non-ionizing radiation levels. Click Here to learn more about the theory used.
Prior to analysis, our engineers use Google Sketchup to build 3D antenna site models. These allow consideration of RF radiation blockage or attenuation from surrounding objects, such as walls and buildings. These models also specify parameters like frequency, power level and antenna pattern as illustrated in the antenna input form below.
Sample antenna input parameters
Since the theory is challenging for the layman to comprehend, we’ve illustrated typical examples of RF levels surrounding common antenna types below. Illustrations show RF levels surrounding selected omnidirectional, panel and dish antennas calculated from 3D models that were created in Sketchup.
An omnidirectional antenna emits RF signals almost evenly in a 360 azimuth around the antenna. The colored grids in the image below represent the electromagnetic field strength or power density to which a person standing on the surface might be exposed. In these diagrams, red exceeds the permitted limit, yellow is 50 to 100 percent of the permitted limit and green, blue and purple are further below the limit. An individual standing or walking in the red zone would be exposed to heating effects from the antenna if he or she remained in that zone for a prolonged period of time. Electromagnetic field strength and permissible exposure time are dependant on the standard being applied. Examples of common standards are shown in the links to the right.
Typical Omnidirectional antenna safety zones
Shown below are safety zones surrounding a typical panel antenna. A panel antenna’s safety zone reflects the characteristic of directing most of its electromagnetic energy in one direction.
Safety zone surrounding a typical panel antenna
The final image shows the safety zone surrounding a dish antenna. In this example the red zone, indicating levels of exposure over the permitted limit, is absent. Note that the size and shape of each zone varies based on the technical and physical parameters. Click Here to learn more about technical and physical parameters.
Safety zone surrounding a dish antenna
