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phase skew - KKPCB

PTFE PCB Glass-Weave and Phase Skew: A Routing Review for Wideband Links

A wideband RF link can show unexplained phase imbalance even when both traces meet the same nominal impedance. On a PTFE PCB, the local resin-to-glass distribution, trace angle, reference-plane spacing, and connector launch can create different effective propagation paths. The project pain is usually discovered after the schematic is stable, when the pair is already...