Impedance & Reflection
Transmission-line behavior, discontinuities, termination strategy and topology evaluated against interface targets.
Simulation-driven SI / PI analysis that identifies risk early, protects design margins and supports reliable high-speed hardware.
Validate before hardware
Fast interfaces and dense power networks leave little room for guesswork. Excel Circuit evaluates interconnect behavior, return paths, impedance, crosstalk and power distribution, then translates the findings into routing, stackup, termination and decoupling recommendations your layout team can use.
Analysis capabilities
Transmission-line behavior, discontinuities, termination strategy and topology evaluated against interface targets.
Aggressor-victim coupling assessed to guide spacing, layer assignment and reference-plane strategy.
Jitter, loss, setup and hold margins reviewed for critical serial and parallel interfaces.
Target impedance, resonances and decoupling effectiveness analyzed across the relevant frequency range.
Voltage drop, copper loading and current bottlenecks identified before they become thermal or reliability issues.
Reference transitions, plane splits and current loops reviewed to reduce emissions and susceptibility risk.
When to analyze
Analysis workflow
Typical deliverables
Frequently asked questions
Common examples include DDR, PCIe, USB, Ethernet, HDMI, MIPI, LVDS, SerDes and other fast clock or data interfaces where interconnect behavior affects margin.
For pre-layout work, schematics, stackup targets, component models and interface requirements are useful. Post-layout analysis typically also requires PCB design data, actual stackup and routing constraints.
Yes. Integrating simulation with our PCB design workflow allows stackup, placement and routing decisions to be optimized earlier and verified again before release.
Share your schematic, stackup and design data for a focused review of signal margin, power stability and layout risk.
Discuss Your SI / PI ProjectPurchasing FAQ
Practical answers about files, schedule, engineering support, production coordination and confidentiality.
Lead time depends on design maturity, complexity, quantity, material or component availability, testing scope, and how quickly engineering questions are resolved. We confirm the schedule after reviewing your files; urgent prototype or quick-turn options can be discussed where the required process and materials permit.
We can review common production outputs such as Gerber and ODB++, as well as native EDA data when agreed during the file review. Because library versions, third-party models and tool releases vary, tell us the software and version used before transfer so we can confirm the working format or recommend a neutral export.
Yes. We can work from an existing design, production package or previous revision. We first check completeness, revision control and the requested scope, then identify any missing data, manufacturability risks or changes that need your approval before work begins.
Project files are limited to personnel and qualified partners who need them for quotation and delivery. Excel Circuit uses reasonable technical and organizational safeguards, does not publish customer designs without permission, and can work under a mutually agreed NDA. Your signed NDA or project agreement controls where it provides specific protections.
Final scope, price and lead time are confirmed after engineering review of your current files and requirements.