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PCB Routing
Microstrip Impedance Calculator
Learn more about using and interpreting results from a microstrip impedance calculator.
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Altium Live Question: Digital Signals in a Grounded Coplanar Waveguide?
Have you considered the effects of a GPCW structure on digital signals? Here’s a hint: look at the S-parameters!
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A Guide to Mode Conversion, Its Causes, and Solutions
Differential pairs are most often discussed in terms of their impedance and length matching tolerance, both with the goal of ensuring proper termination at the receiver and suppression of common mode noise. On interconnects, such as board-to-board connections or cascaded transmission line arrangements, you have an important EMC compliance metric that is sometimes overlooked. This is mode conversion, which can be visualized in an S-parameter
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Differential Stripline Impedance Calculator
Try our differential stripline impedance calculator, built based on Wadell’s equations.
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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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PCB Via Size and Pad Size Guidelines
Do you know what PCB via size you should use in your PCB layout? We’ll look at a few simple ways to answer this question.
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When to Use Tented Vias in Your PCB Layout
Some designers swear by tented vias and prefer to always use them. When should these be used and when should they be avoided? We’ll explore in this article.
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What's HDI? Design Basics and the HDI PCB Manufacturing Process
Learn about design basics for HDI PCB board design. When planning for the HDI PCB manufacturing process, you can prepare accurate designs and deliverables with Altium Designer.
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Recover Conductor Losses By Clearing Your PCB Ground Layer
Need to recover some conductor losses? Here’s how clearing out your ground plane near an I/O or connector can help.
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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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Can You Route Digital Signals on a 2-layer PCB Design?
2-layer PCBs are a common entry-level choice for designers, and they can even support high speed designs if built correctly.
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Two 4 Layer PCB Stackups With 50 Ohms Impedance
Need a 4-layer PCB stackup that can support high speed components on both sides of the board? Consider these alternatives to the typical 4-layer stackup.
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Microstrip PCB Ground Clearance Part 2: How Clearance Affects Losses
In a previous article, I provided a discussion and some simulation results on the necessary clearance between impedance controlled traces and nearby grounded copper pour. What we found was that, once the spacing between the pour and the trace becomes too small, the trace becomes an impedance-controlled coplanar waveguide (with or without ground). We also saw that the 3W rule for the spacing between the trace and the grounded copper pour is a bit
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What Are Differential Pairs and Differential Signals?
Differential pairs and differential signaling are the mainstay of high speed digital communication and data transfer.
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