ELECTROMAGNETIC INTERFERENCE NOISE REDUCTION BOARD USING ELECTROMAGNETIC BANDGAP STRUCTURE

摘要

PURPOSE: A printed circuit board for reducing EMI noise is provided to insert an electromagnetic band gap structure into an edge, thereby preventing noise in the board. CONSTITUTION: The first area(100) comprises a ground layer and a power layer. The second area(200) prevents EMI noise emitted through a side of the first area. The second conductive plate(220) is overlapped with the first conductive plate. A through via(250) connects the first and second conductive plates. The first area and the second area are made of at least four layers. A connection line(260) electrically connects the first conductive plate with a ground layer.