Wiring arrangement including capacitors for suppressing electromagnetic wave radiation from a printed circuit board
US6297965A · kind A · utility
21Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1999 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a printed circuit board comprising a ground layer and a signal layer in which the characteristic impedance of a specific source line is made to be not less than three times as large as the impedance at an upper limit frequency at which the electromagnetic wave radiation of a specific capacitor may occur. In this printed circuit board, variation of a power source voltage and unnecessary electromagnetic wave radiation can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.