Patent ID: 8198545

Claim:
A printed circuit board (PCB) comprising: a first ground layer extended in one direction; a first dielectric layer laminated on the first ground layer and extended in the same direction of the first ground layer; a signal transmission line laminated on a top of the first dielectric layer and extended in the same direction of the first dielectric layer; a first bonding sheet disposed above the first dielectric layer, separated from the signal transmission line at a predetermined interval on one side thereof, and extended in the same direction of the signal transmission line; a second bonding sheet disposed above the first dielectric layer, separated from the signal transmission line at a predetermined interval on another side thereof, and extended in the same direction of the signal transmission line; a third bonding sheet disposed on the first bonding sheet and bonding the first bonding sheet to the second dielectric layer; a fourth bonding sheet disposed on the second bonding sheet and bonding the second bonding sheet to the second dielectric layer; a second dielectric layer disposed above the signal transmission line, the first bonding sheet, and the second bonding sheet; and a second ground layer laminated on the second dielectric layer, wherein the first and second bonding sheets are disposed on edges of the first dielectric layer along the signal transmission line and bond the first dielectric layer to the second dielectric layer.