屏蔽室接地线对屏蔽效能和信号泄漏的影响
The Affect of the Grounding Line of Shielded Enclosure on Shielding Effectiveness
and Signal Leakage
摘要 文章通过实验介绍屏蔽室的接地问题,得出以下结论: 单点接地的屏蔽效能优于多点接地。 接地电阻大小对屏蔽室屏蔽效能没有影响。接地线的长短对屏蔽效能影响不明显,而对信号泄漏有影响。 屏蔽接地线比裸露接地线信号泄漏小。
关键词 屏蔽室 接地电阻 屏蔽效能 信号泄漏
Abstract Four test results of shielded enclosure is present, conclusion are given about
the shielding enclosure grounding after these test:the shielding effectiveness of the
shielding enclosure with one grounding position better than that of several grounding
positions.the grounding resistance not affect the shielding effectiveness of the shielding
enclosure.the length of grounding line affect the shielding effectiveness of the shielding enclosure weakly, but it affect the signal leakage. the signal leakage through the
shielding cable is less than the bare cable.
Keywords shielded enclosure, grounding resistance, shielding effectiveness , signal
leakage