About Us

About Us

Shield Digital Design is here to help you with any high-speed circuit challenges. This includes system architecture definition, schematic capture, PCB stackup design, pre-/post-layout signal and power integrity analysis, PCB layout, design reviews, or any other work required.

Areas of Expertise

Signal Integrity
  • Pre-layout analysis and constraints

  • Stackup design including detailed material selections and optimal trace/via geometries

  • Post-layout analysis/verification

  • Serial protocols such as PCIe, JESD204B, USB3, LVDS

  • Parallel interfaces such as DDR3/4, MII/GMII/RGMII/SGMII

Power Integrity
  • DC-IR and thermal simulations

  • PDN analysis

  • Decoupling capacitor optimization

  • Design reviews

  • Schematic capture

  • PCB layout with a focus on SI/PI


  • Interface with fabricator and/or assembler


Shield Digital Design has the following tools and resources available to best complete your design and analysis:

  • Cadence OrCAD Capture/PCB

  • Cadence Sigrity Analysis

  • Private, secure file upload available upon request

  • Additionally, we have extensive experience using Altium Designer, Keysight ADS, Ansys HFSS and other industry-standard tools

America First

Shield Digital Design is a U.S. based, veteran-owned company. We support local vendors, fabricators and assemblers. We firmly believe that onshoring more manufacturing will improve the economy and secure our way of life for generations to come. As a result of these strong ideals, we will use American-made components as well as stateside fabrication and assembly facilities wherever possible.

Additionally, we are available for work requiring a United States security clearance. Stephen holds an active Top Secret clearance (expiring in 2022) and has been cleared since 2008.


Shield Digital Design was started by Stephen Newberry as a way to share his passion for digital signal and power integrity with the rest of the engineering community. Stephen is a proud U.S. Coast Guard veteran who used his hands-on military electrical training as a springboard for his engineering career. He has a Bachelor of Science degree in Electrical and Computer Engineering from Rutgers University (New Jersey) and is in the process of completing a master's degree in Electrical Engineering from the University of Idaho. In addition to five years of military enlistment, he has industry experience in both defense and commercial hardware design roles.

Why Shield Digital Design?

When searching for a name, it's important that the selection be both memorable and meaningful. In this case, Shield represents the most important component of the armor of God: the Shield of faith. It's a memorial to God's faithfulness and the protection He affords during the spiritual battles of everyday life.

Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.

Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;

And your feet shod with the preparation of the gospel of peace;

Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.

And take the helmet of salvation, and the sword of the Spirit, which is the word of God:

Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;

Ephesians 6:13-18 KJV


Need some design assistance?

Send us an email with some details and we’ll get back to you as soon as possible. Whether you need schematics, stackups, board layouts or SI/PI analysis we are here to help.

Email us now