Statistical Analysis of the Fiber Weave Effect over Differential Microstrips on Printed Circuit Boards
Zhang, Tong
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https://hdl.handle.net/2142/55635
Description
Title
Statistical Analysis of the Fiber Weave Effect over Differential Microstrips on Printed Circuit Boards
Author(s)
Zhang, Tong
Contributor(s)
Cangellaris, Andreas
Issue Date
2014-05
Keyword(s)
Fiber weave effect
statistical analysis
differential microstrips
intra-pair time skew
Abstract
Fiberglass and epoxy-based dielectric substrates are ubiquitous in manufactured printed circuit boards. Their construction usually involves various woven fiberglass fabrics saturated with epoxy resin. These two materials have different electrical properties; hence, as data rate increases and structure feature-size decreases, the fiber weaves in the substrates can have profound impacts on the effective dielectric constants of printed circuit boards, which can cause unforeseen degradations in signal integrity. This thesis proposes a systematic way of modeling the fiber weave effect on high-speed interconnects over
low-cost substrates, and also presents a statistical analysis of the impact of the fiber weave effect on intra-pair skew of differential microstrip lines.
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