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High-Speed PCB Design
Differential Microstrip Impedance Calculator
Learn more about using and interpreting results from a differential microstrip impedance calculator.
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Differential Pair Impedance: Using a Calculator to Design Your PCB
Do you know what to look for in your differential pair impedance calculator? We've compiled the important information you need to know in this short guide.
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How to Design to a Differential Impedance Specification
Differential impedance is sometimes misunderstood and it depends on multiple factors. Learn more about trace width design needed to reach a specific differential impedance target.
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Should You Use Tight vs. Loose Differential Pair Spacing and Coupling?
We get a lot of questions about trace impedance and how to calculate the right trace size to hit a specific impedance in a manufacturable PCB. Just as important as determining an appropriate trace width for a single-ended trace is determination of an appropriate spacing between two traces in a differential pair. So the question is, how close do the traces in a differential pair need to be to each other, and is the need for “tight coupling” really
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Routing Requirements for a USB Interface on a 2-Layer PCB
In an earlier blog , I discussed some of the basic points in preparing routing rules for 2-layer PCBs to support routing and layout with digital signals. In particular, we looked at some of the basic stackup and routing rules needed to support a digital interface like I2C or SPI on a 2-layer PCB. When working with these interfaces, a few simple guidelines can help ensure signal integrity in your board and cut down on EMI. What about an impedance
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Utilizing a PCB Transmission Line Calculator Makes Design Easier
PCB transmission line calculators are a dime a dozen, giving you the tools you need to calculate lossless impedance, lossless propagation delay, or simple things like DC resistance. These quantities are nice to know, but they don't tell you the whole story about your design. Online calculators are also known to give incorrect results when used for impedance calculations, especially because they cannot consider fundamental phenomena like
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What is High Speed PCB Design?
Learn more about what is high speed board design and how to successfully design and route your high speed printed circuit board layout.
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8 Things you Need to Know about Copper
Copper roughness has an impact on high-speed digital designs. Choose your copper wisely. John Coonrod gives us pro tips when picking the most suitable copper to use on your next design.
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EMI Shielding Techniques You Can Use in Your PCB Design Software
Electromagnetic interference (EMI) is such a problem that governments around the world have placed limits on the amount of EMI an electronic device is allowed to generate or receive. Your electronic device needs to be designed to prevent unintentional radiation and suppress conducted noise up to a very high-frequency value. This is not a simple matter of adding filtering on every circuit in your PCB layout, it’s about considering the entire
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New Printed Circuit Engineering Course: PCE EDU
In this episode our guest Rick Hartley and Mike Creeden talks about the New Printed Circuit Engineering Course.
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PCB Routing: How to Ensure PCB Impedance Control with Formulas and Resources
High-speed signals and high-frequency signals both have one thing in common: the need for impedance-controlled routing on low loss, low dispersion interconnects. PCB impedance control can be difficult to achieve without the right set of routing tools and an integrated impedance calculator in your design tools. Most impedance calculators use a basic equation that does not accurately represent real traces on PCB substrates and does not correctly
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What is the High-Speed Signal Frequency Range and Bandwidth?
High-speed signals have broad bandwidth, meaning the high-speed signal frequency range extends theoretically out to infinity. Although signals are band-limited when recovered by a high-speed receiver, your interconnect design should account for the entire signal bandwidth. In the past, this required complex simulations that could account for band-limiting effects in PCBs, including package parasitics and dispersion in a PCB substrate. Today, the
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Designing Physical Layer Security for Military PCBs in Altium Designer
PCBs for military systems are high performing beasts that must meet stringent design and performance standards. Military systems that store and process sensitive data require extra layers of security that goes beyond locking them in a secure enclosure. You’ll need to design your Printed Circuit Boards to be extremely resistant to EMI, route data so that it cannot be tapped passively, and include blacked-out chips to prevent attackers from
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Transmission Line Fundamentals And Electromagnetic Fields, Part 1
Learn more about transmission line fundamentals and how they carry electromagnetic fields.
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FR4 Dielectric Constant and Material Properties
Wondering what is FR4? FR4 is by far the most popular set of PCB substrate materials. Here is how FR4 dielectric constant and your material properties will affect your next PCB.
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How the Best Integrated PCB Libraries Compare Electronic Components to Lower Development Costs
With development schedules becoming tighter and technology advancing at an ever faster pace, designers and engineers need tools that help them cut development costs and stay competitive in every way. This means designers need supply chain tools that help them compare electronic component prices and manage their fabrication data in a single program. Each integrated library helps lower development costs and time by providing the supply chain
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Differential Signaling In High Speed Data Link Flexible Circuits
As noted in many previous articles, due to high-speed and high data-rate designs, most modern products utilize differential signaling. If utilizing the right design protocols and design toolsets, handling differential signaling in standard, rigid PCBs is easily doable. But utilizing differential signaling in flex circuits creates another set of issues, questions, and design challenges. This article will address how differential signaling is
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