EN55022 VS EN301406 question?

machiwai

  I have some question about the EMC. When compare with the spec EN55022 and EN301406. They will cover the frequency band from 30MHz to 1GHz.

According to EN55022
Limits for radiated disturbance of class B ITE at a measuring distance of 10 m
1. For freq. range 30MHz to 230MHz    QP limits : 30 dB(uV/m)
2. For freq. range 230MHz to 1000MHz    QP limits : 37 dB(uV/m)

According to EN301406, TC12
The spurious emissions, as measured,
1. For freq. range 0 to 1GHz    peak limits : 250nW (-36dBm)
2. For freq. range above 1GHz    peak limits : 1uW (-30dBm)

I  would say TC12 has a bit relax specifications than the EN55022 depends on the emission signals :
EN55022 is 30dBuv/m at 10 m from DUT. QP detector.
TC12 is -36dBm from DUT. Peak detector.
If DUT can pass EN55022, it should pass TC12 easily provided that the signal is not the complex signal with very irregular time variants domain and very small duty cycle

Am I right? And any comment. Many thanks.

jiangweiamo

按你提供的数据来看。
0dbm=+107dbuv

这样一换算，EN55022的要求更严一些。