Electronic and electrical products radiation harassment field measurement frequency range: 30MHz-1000MHz.
The measurement is usually conducted in the open field and semi-anechoic chamber.
The main harassment source of the radiation harassment:
The switch frequency and the harmonic harassment of the switching power source.
The running noise of the AC motor, the brush noise of the AC motor.
The electromagnetic disturbance of the electromagnetic induction equipment.
Crystals and digital circuit electromagnetic disturbance of the intelligent control equipment.
We can take the corresponding interfering source control measures after we find the harassment source of the radiation harassment overweight points through the harassment localization way based on the fault location and harassment source instruction.
Generally speaking, at first, we need to restrain the harassment source by optimizing the circuit design, circuit structure and layout in order to strengthen the filtering and correct ground connection.
Secondly, we need to cut off the coupling path by using the correct chassis shielding and transmission line filter.
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