What your Differential Pairs Wish You Knew with Rick Hartley - AltiumLive Keynote
5 人推荐 · 跨 6 个月 · 2021–2026
中文导读
PCB 设计大师 Rick Hartley 在 AltiumLive 上的差分对布线主题演讲。他直指传统的线缆和双绞线规则绝不能照搬到 PCB 上，深入拆解了哪种几何走线阻抗控制最优、间距如何把控、布线实战细节以及走线延迟差（skew）的真实容忍度。
为什么 HN 推它
硬件工程师推崇的实战派宝典，打破诸多盲信经验主义的教条，讲透差分对布线、参考平面与 EMI 的底层本质。
「只要你做 PCB 设计，这场演讲绝对值回每一分钟。」HN 网友原话：this is absolutely worth your time if you design PCBs.
英文原摘要（HackerTube / Claude 整理）
Rick Hartley's AltiumLive keynote on differential pairs in PC boards. He argues the rules from cables and twisted pairs do not carry over, and covers which pair geometry gives the best impedance control, the right spacing, routing practice and how much skew is acceptable.
HN engineers cite Hartley as the intuitive, field-based alternative to cargo-cult PCB advice, especially on differential pair routing, reference planes and EMI.
HN 上的提及
I have never in my life length matched the two lines of a differential pair, including at 10 GHz. Never." - Rick Hartley
Referenced earlier as source for fields-not-wires view of signals
at 1:00:23 in that same video I linked before ( ), Rick Hartley says this
If you want a longer talk on the topic
this is absolutely worth your time if you design PCBs.