Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6569-0
DOI :
10.1109/ISEMC.2001.950723
