Filter circuit and laminate filter

Details Filter circuit and laminate filter Filter circuit and laminate filter

2006-09-19

2006-09-19

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S175000

Reexamination Certificate

active

07109829

ABSTRACT:
Under circumstances where communication devices such as mobile phones are required to be diversified, laminate filters are required to have attenuation-band characteristics which are steep on both low-frequency and high-frequency sides. The prior-art laminate filter has the problem that an attenuation band is formed only on the low-frequency side or on the high-frequency side. A laminate filter has stripline patterns that are first, second, and third resonant elements disposed on a dielectric layer, a capacitively coupled (C-coupled) pattern disposed between the first and second stripline patterns, an inductively coupled (M-coupled) pattern disposed between the second and third stripline patterns.

REFERENCES:
patent: 5202653 (1993-04-01), Yamada et al.
patent: 5227748 (1993-07-01), Sroka
patent: 5351020 (1994-09-01), Okamura et al.
patent: 5374909 (1994-12-01), Hirai et al.
patent: 5412358 (1995-05-01), Hirai et al.
patent: 5896073 (1999-04-01), Miyazaki et al.
patent: 6177853 (2001-01-01), Nagatomi et al.
patent: 6597259 (2003-07-01), Peters
patent: 0 566 145 (1998-08-01), None
patent: 08-023205 (1996-01-01), None
patent: 11-186808 (1999-07-01), None
patent: A 11-289205 (1999-10-01), None
patent: 2002-026607 (2002-01-01), None
patent: 2002-076705 (2002-03-01), None

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