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Crosstalk in PCB and packaging interconnects is arguably one of the most complicated phenomena that may cause signal degradation. Crosstalk effects can be treated statistically as a deterministic jitter with a bounded distribution, but the distribution is usually not known. A direct analysis of a worst-case crosstalk scenario may lead to a system overdesign. Neglecting it in design may cause a system failure that is difficult to find and fix later in a design process. Distortions caused by crosstalk cannot be corrected by signal conditioning techniques at a receiver side. It is very important to understand the sources of crosstalk, how to quantify it and how to mitigate it efficiently, as Yuriy Shlepnev demonstrates in this installation of the "How Interconnects Work" series.

In this article, Yuriy Shlepnev provides an overview of Simbeor electromagnetic signal integrity software and highlights its new features.

In the final installment of this blog series, Benjamin Dannan, Heidi Barnes, and Steve Sandler continue their discussion of how to calculate the minimum CMRR with a PDN impedance measurement using a 2-port probe, demonstrating how to measure a sub-40 µΩ impedance when using an isolator that has sufficient CMRR using two different VNAs, the Bode 100 and E5061B. Achieving sub-40 µΩ impedance measurements is challenging, but completely realistic with the proper test equipment. 

In just two generations, six different technological revolutions have transformed our economy, our careers, and our quality of life, for better or for worse. Eric Bogatin reflects upon industry progress and explores the potential impact of the latest development in technological innovation, generative AI.

Having determined the amount of CMRR needed for 2-port measurement in the previous installment of this blog, Steve Sandler and  Benjamin Dannan return with a demonstration of how to create a DUT and make a 40 µΩ impedance measurement with the 2-port probe.

In this blog, Steve Sandler and Benjamin Dannan demonstrate how to determine how much CMRR is needed when introducing a ground loop isolator to correct the error in a 2-port measurement. 

In this installment of Practical EMC, Kenneth Wyatt discusses the most common design issues for reducing self-generated EMI and outlines several mitigation techniques that have proved successful for challenging wireless products.

With summer upon us, it’s time to catch up on the webinars we might have missed in the last year. Here is a viewing list of the high value video content I will be reviewing in this column over the summer.

Kenneth Wyatt provides practical advice on designing the power input filter using the EMZER EMScope to display the differential mode and common mode noise currents in addition to the conducted emissions. 

In a tribute to Bob Pease, David Banas explores the concept of unbounded jitter and how it aligns with the concerns of engineers and link designers. In his discussion of the definition, constituents, and practical limits of jitter, Banas embodies the simplistic approach of his hero.