Title:
NOISE FILTER AND TRANSMISSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2012/039489
Kind Code:
A3
Abstract:
In a printed wiring board including a first wiring layer and a second wiring layer provided via an insulator layer, at least three guard ground wirings extending along a pair of signal wirings provided in the first wiring layer and supplied with a ground potential are provided between the pair of signal wirings. Thus, crosstalk noise can be reduced without widening a wiring area between the pair of signal wirings.
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Inventors:
HAYASHI SEIJI (JP)
Application Number:
PCT/JP2011/071777
Publication Date:
May 31, 2012
Filing Date:
September 16, 2011
Export Citation:
Assignee:
CANON KK (JP)
HAYASHI SEIJI (JP)
HAYASHI SEIJI (JP)
International Classes:
H05K1/02; H05K1/11
Foreign References:
| US20080053694A1 | 2008-03-06 | |||
| EP1775737A1 | 2007-04-18 | |||
| US20050206467A1 | 2005-09-22 | |||
| US20020157865A1 | 2002-10-31 |
Attorney, Agent or Firm:
ABE, Takuma et al. (30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, JP)
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