Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2007-10-04
2010-11-23
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
Reexamination Certificate
active
07839240
ABSTRACT:
Provided is a reflection-type bandpass filter for ultra-wideband wireless data communication. The filter includes a substrate including a dielectric layer and a conducting layer layered on the top and bottom surfaces thereof, and a center conductor provided within the dielectric layer and serving as a strip line. A width distribution of the center conductor is non-uniform in a length direction of the center conductor.
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Japanese Office Action issued in related Japanese Patent Application No. 2006-274326 with English language translation mailed Jun. 22, 2010.
Japan Office Action issued in related Japanese Patent Application No. 2006-274324 with English language translation mailed Jun. 22, 2010.
Y. Qian and E. Yamashita, “Additional Approximate formulas
Fujikura Ltd.
Lee Benny
Stevens Gerald
Sughrue & Mion, PLLC
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