PCB Design, Fabrication & Assembly Blog

Fast Positioning of Signal Integrity Problems in High Speed Circuit Design

Posted on November 11, 2025 by G

In high-speed circuit design, the traditional approach to locating signal integrity problems is to use hardware triggers to isolate events and/or to capture events using deep acquisition storage techniques before looking for problems. As the speed and complexity of high-performance circuit systems continue to increase, the limitations of using oscilloscopes to locate signal integrity problems are becoming more prominent.

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Signal Integrity Analysis in High Speed Circuit Design

Posted on March 13, 2019 by G

Modern digital circuits can be up to GHz and rise time is within 50ps. At such a rate, the negligence on the PCB design trace is even one foot, and the resulting voltage, delay and interface problems will not only be limited to this line, but will also affect the entire board and Adjacent boards.

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EMI interference: conduction is the culprit

Posted on March 08, 2019 by G

Radiated EMI interference can come from an undirected source and an unintentional antenna. Conductive EMI interference can also come from a source of radiated EMI interference or caused by some board components. Once your board receives conductive interference, it resides in the PCB trace of the application circuit. Some common sources of radiated EMI interference include the components discussed in previous articles, as well as on-board switching power supplies, cables and switches, or clock networks.

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Correct differential pair routing method in Altium 9

Posted on March 06, 2019 by G

How to define differential pairs in the schematic

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How to make your PCB design better

Posted on March 06, 2019 by G

Many people think that the work of PCB Layout is very boring. Every day, thousands of wires are routed to the board, and various packages are repeated, and the work of pulling the wires is repeated. However, designers must make trade-offs between various design rules, taking into account performance, cost, process and other aspects, but also notice that the layout of the board is neat and tidy, not as simple as it seems, and requires more wisdom. Let's talk about developing some good work habits during design, which will make your design more reasonable, easier to produce, and better.

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What is the reduction in noise and electromagnetic interference in PCB design?

Posted on March 05, 2019 by G

Which method do you know below to reduce noise and electromagnetic interference in PCB design?

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Protel-based PCB board design

Posted on March 05, 2019 by G

This article uses Protel99 SE as a design tool to analyze and discuss the basic principles and experience and skills in PCB design.

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Common problems and solutions in high speed PCB design

Posted on February 27, 2019 by G

Although the high-speed simulation tools and interconnect tools at this stage can help designers solve some of the problems, high-speed PCB design also requires the accumulation of experience and in-depth communication between the industry.

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Use of high speed PCB vias

Posted on February 27, 2019 by G

The via design consists of a pad and a pad area around the hole and an inner electrically isolated area. The parasitic inductance, parasitic capacitance, etc. of the vias affect the high-speed signals passing through the vias. The size of the vias and the pads connected to them have a direct effect on the properties of the vias.

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The golden rule that PCB design never changes

Posted on February 26, 2019 by G

10 Rules

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PCB design technology

Posted on February 19, 2019 by G

PCB design techniques have an impact on the following three effects:

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Characteristic impedance of PCB in high speed design

Posted on February 19, 2019 by G

In high-speed designs, the characteristic impedance of the controllable impedance plates and lines is one of the most important and common problems. First, let's look at the definition of a transmission line: a transmission line consists of two conductors of a certain length, one for transmitting signals and the other for receiving signals (remember that the "loop" replaces the concept of "ground"). In a multi-layer board, each line is part of the transmission line and the adjacent reference plane can be used as a second line or loop. The key to a line becoming a "perfect" transmission line is to keep its characteristic impedance constant throughout the line.

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Design performance requirements for PCB multi-layer

Posted on October 27, 2025 by G

The design performance of multi-layer boards is mostly similar to single-panel or double-panel, which is to avoid avoiding too many circuits to fill too small space, resulting in impractical tolerances, high inner layer capacity, and possibly even dangerous products. Quality safety. Therefore, the performance specification should consider the complete evaluation of the thermal shock, insulation resistance, welding resistance, etc. of the inner layer. The following sections describe important factors that should be considered in the design of multilayer boards.

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Basic process of PCB board design

Posted on June 22, 2026 by G

One of the main purposes of the design of the circuit schematic is to provide a network table for the design of the PCB board and to prepare the basis for the design of the pcb board.

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PCB layout design view elements

Posted on February 15, 2019 by G

55 elements

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Main Design Process of PCB

Posted on February 13, 2019 by G

In the design of the PCB, in fact, before the formal wiring, it has to go through a very long step, the following is the main design process:

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Basic knowledge of printed circuit boards

Posted on February 13, 2019 by G

Printed circuit boards (PCBs) appear in almost every electronic device. If there are electronic parts in a certain device, they are also mounted on different sizes of PCB.

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Tag: single-sided boards double-sided boards multi-layer boards

Doing these things, PCB board design is not easy to make mistakes

Posted on February 11, 2019 by G

Total 7 things.

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Signal integrity and characteristic impedance of the device

Posted on November 13, 2025 by G

Signal integrity issues can cause problems when you struggle to stabilize the various signals on the board. The IBIS model is an easy way to solve these problems. You can use the IBIS model to extract some important variables for signal integrity calculations and finding solutions for PCB design. The various values you extract from the IBIS model are an integral part of signal integrity design calculations.

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Signal Integrity Research: What is Signal Integrity?

Posted on October 14, 2025 by G

If you find that the design experience accumulated in the previous low-speed era does not seem to work now, the same design, no problem before, but now can not work, then congratulations, you have encountered the core problem in hardware design: signal integrity . It is a good thing for you to meet one day earlier.In the past low-speed era, the signal rise time is longer when the level jumps, usually a few ns. Interconnects between devices do not affect the functionality of the circuit, and there is no need to care about signal integrity issues. But in today's high-speed era, with the increase in IC output switching speed, many are in the picosecond level, and almost all designs have encountered signal integrity problems regardless of the signal period. In addition, the pursuit of low power makes the core voltage lower and lower, 1.2v core voltage is already very common. Therefore, the noise margin that the system can tolerate is getting smaller and smaller, which makes the signal integrity problem more prominent.

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Fast Positioning of Signal Integrity Problems in High Speed Circuit Design

Signal Integrity Analysis in High Speed Circuit Design

EMI interference: conduction is the culprit

Correct differential pair routing method in Altium 9

How to make your PCB design better

What is the reduction in noise and electromagnetic interference in PCB design?

Protel-based PCB board design

Common problems and solutions in high speed PCB design

Use of high speed PCB vias

The golden rule that PCB design never changes

PCB design technology

Characteristic impedance of PCB in high speed design

Design performance requirements for PCB multi-layer

Basic process of PCB board design

PCB layout design view elements

Main Design Process of PCB

Basic knowledge of printed circuit boards

Doing these things, PCB board design is not easy to make mistakes

Signal integrity and characteristic impedance of the device

Signal Integrity Research: What is Signal Integrity?

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Recommended Article:

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Fast Positioning of Signal Integrity Problems in High Speed ​​Circuit Design

Signal Integrity Analysis in High Speed ​​Circuit Design

EMI interference: conduction is the culprit

Correct differential pair routing method in Altium 9

How to make your PCB design better

What is the reduction in noise and electromagnetic interference in PCB design?

Protel-based PCB board design

Common problems and solutions in high speed PCB design

Use of high speed PCB vias

The golden rule that PCB design never changes

PCB design technology

Characteristic impedance of PCB in high speed design

Design performance requirements for PCB multi-layer

Basic process of PCB board design

PCB layout design view elements

Main Design Process of PCB

Basic knowledge of printed circuit boards

Doing these things, PCB board design is not easy to make mistakes

Signal integrity and characteristic impedance of the device

Signal Integrity Research: What is Signal Integrity?

Categories

Recommended Article:

Fast Positioning of Signal Integrity Problems in High Speed Circuit Design

Signal Integrity Analysis in High Speed Circuit Design