Radiated immunity, also known as radiation sensitivity, is one of the most basic EMS testing items. It refers to the ability of various devices, equipment, or systems to resist radiation in the presence of radiation. The higher the sensitivity, the lower the anti-interference ability. The most important components for testing anti-interference instruments are the signal generator, power amplifier, and transmitting antenna.

IEC 61000-4-3/GB T 17626.3: Radio frequency electromagnetic field radiation immunity test

The radio frequency electromagnetic field radiation immunity test is used to simulate the situation where equipment is subjected to radio frequency radiation interference, especially to simulate the impact that personnel around the equipment may have on the equipment when using mobile phones. Although the power of a single mobile phone is not high, due to its close proximity, it may cause high local field strength. Other devices such as radio stations, television transmitters, mobile radio transmitters, various industrial electromagnetic radiation sources, as well as welding machines, thyristor rectifiers, fluorescent lamps, etc., can also emit radiation during operation. The frequency range specified by the latest standard is 80MHz -6GHz; The test field strength is between 1-30V/m.