Electrical and electronic devices have become widespread in our daily lives, both in the workplace and in private settings. The use of these devices triggers a growing and increasingly important interest in electromagnetic interference, a phenomenon for which protecting data and/or people is essential. Before understanding how the process aimed at shielding from electromagnetic waves works, let’s first discover the subjects affected by this phenomenon.

Electromagnetic interference can be natural (e.g., lightning) or artificial (e.g., printed circuits, industrial systems, etc.).
The presence of these sources of disturbance generates electromagnetic fields that, when interacting with nearby devices, cause malfunctions.
People are also exposed to electromagnetic fields, and although there are no definitive scientific studies on their health effects, regulations exist that impose limits on exposure to these fields.

Engineering in Brief

Electrical engineering is the discipline concerned with shielding objects and people from electromagnetic waves, and this field is gaining increasing interest. The focus of attention on the emission of electromagnetic waves concerns the effects and issues these waves cause, and how and to what extent things can be immune to their propagation. This is why it is necessary to delve into electromagnetic shielding, which involves creating a type of barrier capable of reducing the emission of a source. This shielding protects outgoing data and is required in many contexts, some of which may seem unimaginable. For example, shielding is required in the maritime sector, on ships transmitting and receiving sensitive data, and in particular sectors such as aerospace and aeronautics, where there is not only a high level of privacy but also complexity in the information being transmitted, which cannot be compromised in any way.

Have You Ever Heard of the Faraday Cage?

The practice of shielding from electromagnetic waves essentially involves the creation of a simple shielding system called the Faraday cage.
Electromagnetic shielding aims to reduce the electromagnetic field in a specific space by blocking it with barriers made from conductive or magnetic materials. Naturally, every situation requires a specific application, and in cases where the magnetic fields vary slowly below 100 kHz of frequency, special magnetic materials are needed to more effectively replace the Faraday cage.
For us, electromagnetic shielding is guaranteed by Emigard®, our multilayer product designed to perfectly protect data and people from electromagnetic waves.