Two-layer PCB with impedence control and method of providing the same

摘要

A two-layer printed circuit board (PCB) having impedance control is provided. The two-layer PCB includes: a substrate; a plurality of transmission lines laid on the substrate for transmitting high-speed signals, each of the transmission lines having a standard impedance; and at least one ground trace laid on the substrate adjacent each of the transmission lines, for controlling a characteristic impedance of each of the transmission lines to equal or approach the standard impedance.