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My passive EMI filter design can't meet teh CISPR requirement

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wwwkhunchan

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Hello everybody,

Right now I am working with EMI Filters, and I'v found any problems about the passive EMI filter at high-frequency preformance. My design can't meet the CISPR requirement at [15 MHz to 30 MHz]. Please give me the guides for this trouble.

Anyway, if someone have some ideas concern about active emi filter using voltage or current cancellation. Please post and share in here to help me.

Thank you very much.
 

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