Effect of ground guard fence with via and ground slot on radiated emission in multi-layer digital printed circuit board

Author

Lee, Heeseok ; Jonghoon Kimi ; Ahn, Seungyoung ; Byun, Jung-Gun ; Kang, Deog-Soo ; Choi, Cheol-Seung ; Hwang, Hae-Jin ; Kim, Joungho

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

1

fYear

2001

fDate

2001

Firstpage

653

Abstract

In high-speed digital printed circuit board (PCB), the ground guard fence is often used to reduce the radiated emission and the crosstalk. Moreover, it is quite useful for the presence of the ground slot under the signal trace to avoid the reflection and the radiated emission. In this paper, the effects of the guard fence are studied by experimental measurement and numerical electromagnetic simulation. It is found that the ground guard fence acts efficiently as the shielding wall against the signal trace, which results in the significant reduction of the radiated emission. Also, its inherent low radiation property works well at presence of the ground slot under the signal trace

Keywords

digital circuits; earthing; electromagnetic interference; electromagnetic shielding; interference suppression; printed circuits; PCB; ground guard fence effect; ground slot; high-speed digital printed circuit board; inherent low radiation property; multi-layer digital printed circuit board; numerical electromagnetic simulation; radiated emission reduction; shielding wall; signal trace; via; Circuit testing; Dielectric substrates; Digital circuits; Digital printing; Electromagnetic radiation; Electromagnetic shielding; Microstrip; Numerical simulation; Printed circuits; Research and development;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-6569-0

Type

conf

DOI

10.1109/ISEMC.2001.950723

Filename

950723