Patent Number: 6,297,965

Title: Wiring arrangement including capacitors for suppressing electromagnetic wave radiation from a printed circuit board

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.

Inventors: Sasaki; Hideki (Tokyo, JP), Harada; Takashi (Tokyo, JP)

Assignee: NEC Corporation

International Classification: H05K 9/00 (20060101); H05K 1/02 (20060101); H05K 007/02 (); H05K 007/06 ()

Expiration Date: 10/02/2018