Evaluation of fibre weaving of substrate on differential striplines using an analytical approach

Electrically long differential signal traces may introduce significant signal skew due to weave effect that deteriorates the signal quality. As serial data link pushes towards higher data transfer rate and yet the length of the signal trace has not reduced, the weave effect will become significant. Full wave method is often used to study the weave effect, however, the computational time is expensive. As such, a novel analytical method is proposed in this paper to study the fibre weave effect in PCB dielectric.