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Radiated Emission , in other words, by means of Radiated Propagation is only one of the Electromagnetic Compatibility (EMC) tests. According to the product to be tested according to the EMC standard is determined after determining an anechoic chamber (anechoic chamber) or in the open field test area (OATS) is a test must be done. The purpose of the Radiated Emission test is to determine whether the unwanted electromagnetic frequencies of the product are below a certain level. If the measurement results of a product being tested are below the limit values ​​specified in the relevant standard, this test is considered to have passed. If the measurements on the limit are obtained, a change in design or EMC is required on the remaining product. The studies carried out on this kind of product are R & D works and are very important for the manufacturer.

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O que você precisa saber sobre o teste de emissão irradiada

The measured frequency range of the Radiated Emission tests usually starts at 30 MHz and can be up to 6GHz depending on the product specification and the applied standard. Measurements are made with the antennas designed for the specified frequencies and the measurement devices called the EMI Receiver. The measuring distance between the product and the antenna is usually 3 meters or 10 meters. It is also possible to change the limits according to the measuring distance. For example, the limit value of 40 dBuV / m at 3 m can be reduced to 30 dBuV / m if the measurement is done at 10 m.

The Radiated Emission test is one of the most basic tests of EMC tests, so it is a test that the product designers should be familiar with. Measures related to EMC testing of a product should start at the design stage of the product and continue during the serial production phase. Even when the product is in the end user, it should be followed.

Radiated Emission tests are performed according to the relevant EMC standard of the Equipment Under Test (EUT). Some of these standards are listed below:

CISPR 25 ou EN 55025

CISPR 32 ou EN 55032

CISPR 14-1 ou EN 55014-1

CISPR 15 ou EN 55015

RTCA DO-160

FCC Parte 15B

ETSI EN 301 489-1

ETSI EN 301 489-17