| 摘要 |
An apparatus and method that permits signal traces of different widths and the same impedance to be placed on the same layer of a printed circuit board (PCB). Alternatively, signal traces of different impedances but the same width may be placed on the same layer of the PCB. Ground and power planes are paired on adjacent layers of the PCB with a portion of the power plane relative to the ground plane removed. Signal traces of the same width and different impedances or vice-versa can be placed on the same layer because each signal trace is referenced to different planes.
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