Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Reexamination Certificate
2011-03-15
2011-03-15
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
C333S168000, C333S175000
Reexamination Certificate
active
07907034
ABSTRACT:
In a laminated band-pass filter, a capacitance is formed between a ground electrode of a ground electrode formation layer and each of capacitor electrodes of capacitor electrode formation layers. An even number of LC parallel resonators is arranged such that via electrodes and line electrodes define a plurality of inductor electrodes and, when viewed in a direction in which the inductor electrodes are arranged, the surfaces of the loops of the inductor electrodes overlap each other at least partially. The loops defined by the inductor electrodes of neighboring LC parallel resonators have opposite directions. The capacitor electrodes have a shape and distribution or arrangement having point symmetry in plan view.
REFERENCES:
patent: 4418324 (1983-11-01), Higgins
patent: 6759926 (2004-07-01), Yamaguchi
patent: 6914500 (2005-07-01), Hirabayashi
patent: 7671706 (2010-03-01), Taniguchi
patent: 2001/0050601 (2001-12-01), Yano
patent: 2002/0030561 (2002-03-01), Masuda et al.
patent: 2003/0048156 (2003-03-01), Uriu et al.
patent: 2004/0085164 (2004-05-01), Hirabayashi
patent: 10 2006 023 431 (2006-11-01), None
patent: 1 162 738 (2001-12-01), None
patent: 1 265 311 (2002-12-01), None
patent: 3-262313 (1991-11-01), None
patent: 4-6911 (1992-01-01), None
patent: 6-164289 (1994-06-01), None
patent: 10-256806 (1998-09-01), None
patent: 2000-201001 (2000-07-01), None
patent: 2001-352224 (2001-12-01), None
patent: 2003-198226 (2003-07-01), None
patent: 2006-197214 (2006-07-01), None
patent: 02/09225 (2002-01-01), None
Official Communication issued in International Patent Application No. PCT/JP2008/058800, mailed on Aug. 19, 2008.
Official Communication issued in corresponding European Patent Application No. 0875261.1, mailed on Jun. 18, 2010.
Tang et al., “Laminated Ceramic Interdigital Bandpass Filter”, Microwave Conference Proceedings, Dec. 4, 2005, vol. 55, pp. 1-3.
Baabuei et al., “The Application of Wideband Microstrip Interdigital Filters in Microwave Circuits”, Microwave Conference Proceedings, Dec. 4, 2005, vol. 1, oo. 1-4.
Glenn Kimberly E
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
Pascal Robert
LandOfFree
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