Radio frequency interference (RFI) is unwanted electromagnetic energy phenomena within the frequency range generally used for radio communications.

They are generated both by electrical equipment specifically built to produce high-frequency energy (microwave ovens, medical equipment, telecommunications equipment, etc.) and by equipment and machines using electromechanical and electronic devices or motors (such as washing machines, portable utensils, stove, gas lighters, boilers, switch-mode power supplies, etc.).

Conventionally, disturbances between 10 kHz and 30 MHz are considered conducted, and those between 30 MHz and 1 GHz are considered radiated.

The laboratory is also equipped for tests concerning the measurement of magnetic fields with reference to human exposure CEI EN 62233.

A climatic chamber is available in our laboratory where electronic components are tested according to specific procedures.

International standards impose measurement criteria and limits on the emission of radio interference, with which all equipment placed on the market must comply: in all EU countries since 20 April 2016, the EEC Directive 2014/30/EU on electromagnetic compatibility has been in force. In compliance with this legislation it has been made mandatory CE marking of electronic and electromechanical equipment. The most effective and, at the same time, most economical method of overcoming this problem is to isolate the equipment from the power supply by using appropriate passive circuits (capacitors and inductances) called interference filters.

These filters perform a dual action:

• Limiting the radio interference emitted by the equipment towards the network.
• Immunise the equipment itself from interference coming from the network.