Feed-through EMI filter with a metal flake composite magnetic material
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United States of America Patent
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-
May 1, 2001
Grant Date -
N/A
app pub date -
Mar 15, 1999
filing date -
Mar 20, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A feed-through EMI filter includes a hollow outer conductor, an inner conductor passing through the outer conductor, and a composite magnetic material of magnetic metal flakes disposed between the outer conductor and the inner conductor. Both ends of the outer conductor are closed by insulating lids supporting the inner conductor in a feed-through arrangement. The composite magnetic material has a higher complex relative permeability at GHz frequencies than ferrites and produces a large insertion loss.
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