Definition

Differential coplanar waveguide routes two central signal traces alongside each other, surrounded by ground conductors on the same layer, with optional ground plane below. This creates a ground-signal-signal-ground (GSSG) configuration that provides both differential signaling benefits (noise rejection, EMI reduction) and coplanar isolation advantages (same-layer return path, RF performance). The structure is used in high-speed and RF applications where both differential signaling and controlled impedance at high frequencies are required.