Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Reexamination Certificate
2006-06-20
2006-06-20
Ham, Seungsook (Department: 2817)
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
C333S181000, C336S200000
Reexamination Certificate
active
07064629
ABSTRACT:
A thin-film common mode filter is provided, comprising: a pair of magnetic plates; an upper coil conductor and a lower coil conductor formed between the pair of magnetic plates, spirally wound in the magnetic plate surface direction, and overlapped each other; an upper lead conductor and a lower lead conductor, one ends of the upper lead conductor and the lower lead conductor connected electrically to one ends in center portions of the upper coil conductor and the lower coil conductor, respectively, and extended to external portions across the upper coil conductor and the lower coil conductor; and a pedestal part formed below a connection portion between the upper coil conductor and the upper lead conductor, for lifting the connection portion to an upper position.
REFERENCES:
patent: 6356181 (2002-03-01), Kitamura
patent: 6917274 (2005-07-01), Hong et al.
patent: 2003/0137384 (2003-07-01), Itou et al.
patent: 04-364709 (1992-12-01), None
patent: 08-203737 (1996-08-01), None
patent: 08-335517 (1996-12-01), None
patent: 11-054326 (1999-02-01), None
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