?? 抑制電纜干擾的制勝武器－濾波連接器.htm
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<p align=center style='text-align:center'><strong><span style='font-size:12.0pt;
letter-spacing:4.0pt'>抑制電纜干擾的制勝武器－濾波連接器</span></strong><span lang=EN-US><o:p></o:p></span></p>
<p><strong><span lang=EN-US style='font-size:10.0pt;letter-spacing:4.0pt'>1．電纜是系統的最薄弱環節</span></strong><span
lang=EN-US><o:p></o:p></span></p>
<p><span style='letter-spacing:4.0pt'> 令許多產品開發人員不解的事情是：為什么兩臺獨立進行電磁干擾測試時完全合格的設備通過電纜連接起來后，系統就不在合格了。這是忽略了電纜的輻射作用。實踐表明，按照屏蔽設計規范設計的屏蔽機箱一般很容易達到<span
lang=EN-US>60-80dB的屏蔽效能，但往往由于電纜處置不當，造成系統產生嚴重的電磁兼容問題。90%的電磁兼容問題是由于電纜造成的。這是因為電纜是高效的電磁波接收天線和輻射天線。</span></span><span
lang=EN-US><o:p></o:p></span></p>
<p><span style='letter-spacing:4.0pt'> 電纜產生的輻射尤其嚴重。電纜之所以會輻射電磁波，是因為電纜端口處有共模電壓存在，電纜在這個共模電壓的驅動下，如同一根單極天線，如圖<span
lang=EN-US>1所示。</span></span><span lang=EN-US><o:p></o:p></span></p>
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