Layer Stackup Design

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PCB Transmission Lines

Transmission line losses

Your Guide to Transmission Line Losses in Electrical Systems Learn everything you’ve wanted to know about transmission line losses and how to analyze them on your PCB. Read Article

RF PCB Layout and Routing

The Digital Engineer's Guide to RF PCB Design Guidelines: Layout and Routing Read our guide to learn some of the best RF PCB design guidelines for layout and routing. We’ll also look at how simulation tools can help you evaluate your RF PCB layout. Read Article

Transmission Line Reflection Coefficient

Transmission Line Reflection Coefficient View a numerical example of the transmission line reflection coefficient and how simulations can help you understand the results. Read Article

Transmission line fundamentals

Transmission Line Fundamentals And Electromagnetic Fields, Part 1 Learn more about transmission line fundamentals and how they carry electromagnetic fields. Read Article

S-parameter measurement

S-Parameter Measurements and Errors in Power Integrity No matter where you look, it seems S-parameters never go away! They are mandatory tools for understanding some systems, such as an interconnect or antenna, while other network parameters can sometimes give a better conceptual understanding of electrical behavior. These parameters are normally reserved for signal integrity among electronics engineers, but if you look hard enough, you’ll find that S-parameters are also used for power integrity Read Article

Optical interconnects pcb

Optical Interconnects in PCB Design: Progress in 2020 and Beyond Optical interconnects are the key to achieving higher data rates and breaking through Moore’s Law. Here’s how they will affect PCB layouts. Read Article

ABCD parameters vs S-parameters

The Advantages of ABCD Parameters for Analyzing Your PCB SI (Signal integrity) engineers always talk about S-parameters, but an alternative tool for circuit design and analysis is ABCD parameters. Read Article

transmission line transfer function ABCD parameters S parameters

Transmission Line Transfer Function from ABCD and S-parameters High frequency and data rate channels can be routed as a mode-selective transmission line. Here’s when you should consider this routing technique. Read Article

Stripline vs microstrip impedance

Stripline vs. Microstrip Trace Width for Desired Impedance: Are They the Same? Stripline vs. microstrip width values are quite different; they can’t simply be interchanged. Let’s break down why and what you can expect from your PCBs. Read Article

Through Thick And Thin — How Do You Get High Current Into a High Speed PCB?

Through Thick And Thin — How Do You Get High Current Into a High Speed PCB? The typical large currents in today’s high speed PCB designs require a different approach. This article will describe the stackup requirements associated with these very large current PCBs and how to design them so that they can be readily manufactured properly. Read Article

S-parameter causality

How to Verify Signal Integrity Causality in S-parameters We often hear about how time-domain simulations require causal S-parameters. We’ll explore what S-parameter causality means and what non-causal S-parameters do to channel analysis. Read Article

Eric Bogatin Debunks Common Misconceptions About Transmission Lines

Eric Bogatin Debunks Common Misconceptions About Transmission Lines In this episode, signal integrity expert Eric Bogatin aims to give PCB designers some needed guidance when it comes to dealing with transmission lines. Read Article

Series-Terminated Transmission Line Voltage and Current Waveforms

Voltage and Current Waveforms on a Series-Terminated Transmission Line In both of our books, Right the First Time, A Practical Handbook on High Speed PCB and System Design, Volumes 1 and 2, as well as in our on-site and public courses, we talk about the value of a series-terminated transmission line. With this type of transmission line, no power is being used unless the line is being charged up. This enables a lot of computing with a minimum of power. But having a clear understanding of how this type of line Read Article

Why PCB Power Rails Need to be Low Impedance

Why PCB Power Rails Need to be Low Impedance Read to learn what constitutes power rails, how it functions, and how fear can be a driving factor in making bad design decisions. Read Article

The Role Of ISU Petasys, A Multilayer Manufacturing Company in Realizing a Successful PCB Implementation

The Role Of ISU Petasys, A Multilayer Manufacturing Company in Realizing a Successful PCB Implementation John Stephens, Senior Vice President of Sales for ISU Petasys (pronounced “E-soo”), built his first circuit board in 1974. Like many others of us in the industry, he got a first-hand education in PCB design, and manufacturing and assembly by working in the aerospace industry. He explains, “I started in aerospace at Litton Guidance and Control Systems, where I worked in a process development lab that was basically a prototyping shop where we Read Article

How Copper Foil Roughness Affects Your Signals and Impedance

How Copper Foil Roughness Affects Your Signals and Impedance The history of engineering, both electrical and mechanical, is littered with approximations that have fallen by the wayside. These approximations worked well for a time and helped advance technology significantly over the decades. However, any model has limits on its applicability, and the typical RLCG transmission line model and frequency-independent impedance equations are no different. So what’s the problem with these equations? Senior PCB Read Article

Efficient PCB Routing Using Gloss and Retrace Software Tools The primary goal of your traces is to carry signals throughout your board without losses. To do this properly, you Watch Video