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Radiated emissions due to split planes.
As part of my job, I have been analyzing PCB layouts that have been designed by third parties. Whenever I do this, it is interesting to...
Ignacio de Mendizabal
Jan 24, 20233 min read
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Common mode emission on card extensions and ground bouncing.
Today, it is common for a product to contain a motherboard and several daughter boards. In the following example, let us imagine that we...
Ignacio de Mendizabal
Nov 23, 20222 min read
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Routing strategy when changing layer.
I designed my first general I/O PCI card when I was a student (a few years ago now :-)). The PCI card was part of my thesis, and the...
Ignacio de Mendizabal
Nov 11, 20222 min read
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PCB Crosstalk and how to use the ground plane to minimise it.
To avoid EMI and crosstalk on both PCB traces and connectors, it is crucial to understand the return path current. Previously, I...
Ignacio de Mendizabal
Nov 11, 20221 min read
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Placement of vias on bypass capacitors.
When we place our bypass capacitors on a PCB, there are several factors that may affect the series inductance of the capacitor ESL when...
Ignacio de Mendizabal
Oct 26, 20222 min read
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Why do we need the ground/power planes!
Recently, a customer contacted me about the possibility of "fixing" their design from the standpoint of EMC. The board may function...
Ignacio de Mendizabal
Oct 22, 20222 min read
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