CST – Computer Simulation Technology

Analyzing HF & LF RadHaz Scenarios with 3D EM Simulation

 

Modern technology means that people are exposed to electromagnetic fields almost everywhere from a variety of sources. While the field strength is typically low in large distance from the source, in close proximity the induced fields and absorbed power may be high enough to harm the body. High-frequency electromagnetic fields, such as from broadcasting systems, mobile communication, wi-fi and radar, can all potentially pose radiation hazard (RadHaz) problems, as can low-frequency magnetic fields generated by high currents in applications such as welding guns, trains and electric vehicles.

Various standards exist to regulate device design and installation of antennas and high-power components to avoid RadHaz. As measurement is typically not an option inside the human body, EM simulation is often the only way to analyze the complex field distribution and estimate the resulting hazards in order to ensure a product complies with statutory exposure limits. ...

This eSeminar will show how complex RadHaz scenarios can be tackled by EM simulation. The webinar will start with an overview of biological EM simulation, discussing human models, material properties, solver technologies and hybrid approaches. This will be followed by examples of RadHaz analysis: a person doing maintenance in a cell phone tower surrounded by various base station antennas, a military vehicle with various RF antennas, fields induced in a worker operating a welding gun in an industrial environment and finally a person driving an electric car.

1. Analyzing HF & LF RadHaz scenarios with 3D EM simulation

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