电磁兼容试验中的混响室技术

Technology of the Reverberation Chamber for EMC Test

分析了电磁兼容试验用混响室技术,它主要包括混响室的校准和性能参数确定。在屏蔽腔内安装转动的搅拌桨使得混响室内部电磁场在统计上分布均匀且各向同性。混响室辐射抗扰度测试技术分析及与电波暗室技术对比说明该测试技术造价低、测试空间大、速度快,可廉价替代暗室测试,且已被国际标准广泛接受。

The technology of the reverberation chamber for EMC test is introduced in details. The technology includes the chamber calibration and the qualification of the performance parameters. The statistical uniform and isotropic field is yielded by rotating a stirrer in the shielding room. The radiation immunity testing technology using the reverberation chamber is also analyzed and compared with the testing technology using anechoic chamber. It shows that the RC technology offers an excellent alternative with low cost, high speed and large volume. Moreover, the RC technology has been accepted by several international standards.