Circuit board having a signal layer with signal traces and a reference plane with an additional signal trace larger than the signal traces

摘要

Techniques for routing signal traces in a circuit board are described. An example of an electronic device in accordance with the described techniques includes a circuit board comprising a plurality of conductive layers. The conductive layers include a signal layer and a reference plane. The signal layer includes signal traces and the reference plane includes an additional signal trace.

主权项

1. An electronic device, comprising:
a circuit board comprising a plurality of conductive layers, the plurality of conductive layers comprising: a signal layer comprising signal traces; and a reference plane comprising an additional signal trace, wherein the additional signal trace is larger than the signal traces in the signal layer; wherein the additional signal trace is one of a pair of additional signal traces used for differential signaling and wherein the pair of additional signal traces have a same impedance as the signal traces in the signal layer.