Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Reexamination Certificate
2007-08-17
2008-10-21
Dinh, Phuong K (Department: 2839)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
C361S792000
Reexamination Certificate
active
07438560
ABSTRACT:
A printed wiring board, comprising a signal plane having a baseband block for processing a baseband signal and a high-frequency block for processing a high-frequency signal which is obtained by converting the baseband signal, and a ground plane opposing to the signal plane. The baseband block and the high-frequency block are connected through a transmission line for transmitting a signal of a specific frequency region. The ground plane is provided with a first ground portion and a second ground portion, the first ground portion being provided at an area opposing to the baseband block, the second ground portion being provided at an area opposing to the high-frequency block. The first ground portion and the second ground portion are coupled to each other through a coupling portion provided therebetween which has a low impedance with respect to the signal of the specific frequency region.
REFERENCES:
patent: 5912809 (1999-06-01), Steigerwald et al.
patent: 6937480 (2005-08-01), Iguchi et al.
patent: 7176383 (2007-02-01), Lauffer et al.
patent: 7222045 (2007-05-01), Kourogi et al.
patent: 2004-264028 (2004-09-01), None
Canon Kabushiki Kaisha
Dinh Phuong K
Fitzpatrick ,Cella, Harper & Scinto
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