Examination of the RF Output Power on Electromagnetic Susceptibility Tests of the Radio Equipment

In recent years, wireless smart devices which use radio frequencies are emerging increasingly in all areas of our life. This article presents the influences of radio frequency (RF) output power level on RF electromagnetic field and RF common mode immunity tests of wireless radio equipment. According to the ETSI EN 301 489-17, the RF output power level should be adjusted to the maximum level during the tests. However, the use of RF output power level in daily life may not work at the maximum or fixed level in a wireless device. In order to observe the effects on test results, RF common mode and RF electromagnetic field immunity tests are performed at the maximum RF output power level as stated in the standard and at different RF output power levels as independent from the standard. The results of the measurements are compared with each other at the certain frequencies.