The multilayer printed circuit board

A multilayer printed circuit board (PCB) at least includes a substrate (101); a ground layer (102) having edges which define a gap portion (alpha), the ground layer being provided on a bottom face of the substrate (101); and at least two signal traces (103, 201) and provided on a top face of the substrate so as to straddle the gap portion (alpha) and so as to be parallel to each other. The multilayer PCB also includes at least one ground trace (105) provided between the at least two signal traces (103, 201) and on the top face of the substrate so as to straddle the gap portion (alpha).