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Technical articles
Short pieces on the things that are usually explained wrong.
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Reading an HFSS Convergence Plot Honestly
A converged solve and a correct one are different things. Here is how to tell them apart.
· 3 min read
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Return Current Does Not Take the Shortest Path
Above about 100 kHz it follows the signal trace instead — and most grounding mistakes come from not believing that.
· 3 min read
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Why 50 Ω, Really
The number is not fundamental, and the usual explanation is wrong. Here is where it actually comes from.
· 4 min read