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The most powerful, modern and easy-to-use PCB design tool for professional use

Altium Designer 20

The most powerful, modern and easy-to-use PCB design tool for professional use

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Signal Integrity

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Analyzing Crosstalk on FIFO and DDR4 Parallel Bus Interfaces Do you need to spot crosstalk on a parallel bus? Use a field solver that integrates with your PCB design and layout tools. Read Article

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

Preventing Ground Loops in Your PCB Design I think we’ve all been there. You buy that awesome stereo system only to hear that familiar humming sound in the background. When you take it back to the store the clerk blames the manufacturer. The stereo manufacturer then blames the component manufacturer and the component manufacturer can’t blame anyone. In reality, ground loops that form due to shoddy design are the source of the problem. Ground loops generate noise in electric circuits Read Article

High Currents and Higher Temperatures: PCB Design Tips for Heat Management I remember the first (and hopefully the only) time one of my circuits caught on fire. It started with the resistors and quickly spread to a nearby capacitor. Thankfully, the destruction was minor and most of the components were salvageable. Why did this happen you ask? No, this was not due to a short circuit. Very simply, I did not take into account the high current PCB design. As electronics continue to be miniaturized, the thermal demands in Read Article

The Advantages and Disadvantages of Active and Passive RFID Technologies When I’m designing a new PCB or product one of the hardest parts for me is choosing exactly which components I should use. It seems like every technology out there now has a different configuration to achieve the best performance. Even when you’re dealing with a fairly straightforward technology like radio frequency identification (RFID) circuit board there are a lot of flavors to choose from. While every type of RFID design label uses an active Read Article

Introduction to High Speed PCB Designing: How to Eliminate Crosstalk Recently at a wedding reception I was trying to talk to a gentleman who was sitting at the same table as me. Unfortunately there was a woman sitting between us carrying on a conversation with someone else sitting on my other side. With all the commotion of the reception in the background, conversation was difficult to begin with. Having another discussion taking place between us though made our conversation impossible. What we had was crosstalk Read Article

How Load Capacitance on a Transmission Line Affects Your Signals If you ever read about transmission lines and integrated circuit datasheets, there is this seemingly mysterious quantity called load capacitance. This value depends on the geometry of the component lead connected to the transmission line, as well as the substrate material and distance to the reference plane on the integrated circuit die. When working with transmission lines, the load capacitance of a component has some important effects on signal Read Article

Microwave Cavity Resonator Emissions in Your PCB Layout Even digital designers need to worry about cavity resonant emission in PCBs. Here’s how your circuit board can act like a microwave cavity resonator. Read Article

MIMO Antenna Design and PCB Layout Tips Multiple-input multiple-output (MIMO) has become a more popular term now that 5G is becoming more publicized, but this term and the technology have been around for awhile. MIMO can be traced all the way back to research papers from the 1970s, and significant development was required before the technology could be commercialized. Recently, the drastic increase in wireless services direct to consumers and in offices has been enabled by MIMO. If you Read Article

Stripline vs. Microstrip 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

What is an Impulse Response Function? You can get a transfer function from a simulation, but what is an impulse response function? Learn more in this article. Read Article

Differential Pairs Without Ground: Is it a Problem? Some designers tell you that differential pairs without ground are acceptable. So who’s correct? We’ll examine the pros and cons of a differential pair ground plane. Read Article

Signal Integrity for Mesh Ground Planes in Flex PCBs Even flex PCBs need a ground plane. Mesh ground planes can provide a 0 V reference in your PCB, but they have particular signal integrity requirements. Read Article

Modeling PCB Interconnects as Causal Systems Real PCB interconnects are causal systems and must be modeled with the correct time-dependent behavior. Read Article

The Benefits of High-Dk PCB Materials The terms “high-speed design” and “low-Dk PCB laminate” are often used in the same articles, and often in the same sentence. Low-Dk PCB materials have their place in high speed and high-frequency PCBs, but high-Dk PCB materials provide power integrity. Low-Dk PCBs are typically chosen as they tend to have lower loss tangent. Thus high-DK PCB materials tend to get overlooked for high speed and high-frequency PCBs. When we look at power integrity Read Article

Using Cellular for Internet of Things Devices and Design Cellular internet of things products are widely accessible and easy to design thanks to standard cellular modem modules and transceiver components. Read Article

Determining the Parasitic Inductance of a DC to DC Converter Unwanted parasitic inductance from capacitors and transformer leakage inductance in DC/DC converters cause power instability in digital systems. Here's how you can determine parasitic inductance in your power system. Read Article