PCB Design, Fabrication & Assembly Blog

What kind of PCB stacking strategy helps shield and suppress EMI?

Posted on July 19, 2018 by G

The following layered stacking scheme assumes that the supply current flows on a single layer, with single or multiple voltages distributed across different parts of the same layer. The case of multiple power planes is discussed later.

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The role of PCB layered stacking in controlling EMI radiation

Posted on July 19, 2018 by G

There are many ways to solve EMI problems. Modern EMI suppression methods include: using EMI suppression coatings, selecting suitable EMI suppression components, and EMI simulation designs. This article starts from the most basic PCB layout and discusses the role of PCB layered stacking in controlling EMI radiation.

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High Frequency PCB Routing Skills

Posted on July 19, 2018 by G

Digital devices are moving in the direction of high speed, low consumption, small size, and high anti-interference. This trend has put forward many new requirements for the design of printed circuit boards. The application of Protel software in China is quite common. However, many designers only pay attention to the Protel software's routing rate. The improvements made by Protel software to adapt to the changes of device characteristics are not used in the design, which not only makes software resources. The waste is more serious, and the excellent performance of many new devices is difficult to play. This paper intends to introduce Protel for Windows V1.5 software as an example to introduce the high-frequency circuit wiring when Protel software can Some special countermeasures are provided.

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Calculation of characteristic impedance

Posted on July 16, 2018 by G

We can derive the value of the characteristic impedance, which is the value of the instantaneous impedance seen by the signal during transmission.

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Characteristic impedance of the transmission line

Posted on July 16, 2018 by G

From a battery point of view, once the design engineer connects the battery leads to the front end of the transmission line, there is always a constant value of current flowing out of the battery and keeping the voltage signal constant. Some people may ask, what kind of electronic components have such behavior? A constant current value is maintained when a constant voltage signal is added, of course the resistance.

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Analyze Characteristic Impedance--Basic Concept

Posted on July 16, 2018 by G

In recent years, an increasingly important issue in the field of high-speed design has been the focus of design engineers on the design of controlled-impedance boards and the characteristic impedance of interconnects on boards.

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Tag: transmission line pcb

Next Generation Design Tools Outlook

Posted on July 12, 2018 by G

To address signal integrity issues, the entire design process needs to be further upgraded to become a complete set of tools that can take into account multiple different effects and design assessments.

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Method for solving signal integrity problems in ASIC chip design

Posted on July 12, 2018 by G

For the design of ASIC (Application Specific Integrated Circuit), the performance of standard cells is wasted due to the application of standard cells, shorter development cycle, and more relaxed protection between cells. Therefore, the key to high-end ASIC chip design is to ensure high-performance chips are delivered with shorter development time.

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Focus on signal integrity in complex designs

Posted on July 12, 2018 by G

In SoC design, the coupling between signals can cause signal integrity problems. Neglecting signal integrity problems can lead to crosstalk between signals, and reliability, manufacturability and system performance will also be reduced.

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EMC design skills inside the product

Posted on July 10, 2018 by G

At present, electronic equipment is used in various electronic devices and systems, and printed circuit boards are still the main assembly method. Practice has proved that even if the schematic design of the circuit is correct and the printed circuit board is not properly designed, it will adversely affect the reliability of the electronic device. For example, if the two thin parallel lines of the printed board are in close proximity, a delay in the signal waveform is formed, and reflected noise is formed at the end of the transmission line. Therefore, when designing a printed circuit board, care should be taken to use the correct method.

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The importance of layout in high speed PCB design

Posted on July 10, 2018 by G

Throughout the successful electronic products, we must have five characteristics: one is stable in performance; two is beautiful in appearance; three is easy to apply; four is reasonable in cost; five is convenient for mass production; and it is not a successful product. These five points are related to the layout. In other words, a good and reasonable layout is to fully consider the above five points, so the layout is a very important part of the success of the product.

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Electromagnetic compatibility design

Posted on July 04, 2018 by G

Electromagnetic compatibility refers to the ability of an electronic device to work in a coordinated and efficient manner in various electromagnetic environments. The purpose of the electromagnetic compatibility design is to enable the electronic device to suppress various external interferences, enable the electronic device to work normally in a specific electromagnetic environment, and at the same time reduce the electromagnetic interference of the electronic device itself to other electronic devices.

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Several issues that should be taken seriously by mobile phone PCB design

Posted on July 04, 2018 by G

1. Power and ground processing

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How to ensure that no noise is added when designing PCB

Posted on July 04, 2018 by G

It must be considered from the following aspects:

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RF layout tips for mobile phone PCB design

Posted on July 04, 2018 by G

The increase in the functionality of the mobile phone requires higher design of the PCB.

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PCB design tips 100, teach you to master PCB design easily (25-30)

Posted on September 28, 2021 by G

In this article, we will teach you how to do a PCB design easily 25-30

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Tag: pcb PCB design pcb deisgn tips

Internal EMC design skills - engineers must

Posted on June 11, 2018 by G

At present, electronic equipment is still used in printed circuit boards as the main assembly method for various electronic devices and systems. Practice has proved that even if the circuit schematic design is correct, improper design of the printed circuit board will also have an adverse effect on the reliability of electronic equipment. For example, if the two fine parallel lines of the printed board are in close proximity, a delay in the signal waveform is formed, and reflection noise is formed at the end of the transmission line. Therefore, when designing a printed circuit board, it should be noted that the correct method is used.

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Seven Considerations in PCB Design

Posted on June 08, 2018 by G

The schematic design before single-panel proofing is a preliminary preparation work. When drawing a schematic diagram, it is necessary to pay attention to the final connection of each file as a whole in the hierarchical design. This also has important significance for the future work. Due to software differences, some software may appear to be physically connected (electrically). If you do not use related detection tools to detect, if something goes wrong, it will be too late to wait until the board is ready. Therefore, it is important to emphasize the importance of doing it in order, and we hope to draw everyone’s attention.

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The core of PCB design and solutions

Posted on June 08, 2018 by G

The design of a printed circuit board (PCB) refers to the layout of the circuit through the design principle drawing to produce the circuit board at the lowest possible cost. In the past, this usually required expensive specialized tools to complete, but now, with the increasing popularity of free high-performance software tools, such as DesignSparkPCB, and design models, circuit board designers have greatly accelerated the design speed.

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Techniques of PCB layout and processing defects

Posted on June 05, 2018 by G

As the PCB size requirements are getting smaller and smaller, device density requirements are getting higher and higher, and PCB design is becoming more and more difficult. How to achieve a high PCB layout rate and shorten the design time, careful analysis of the design and careful setup of the tool software before starting the wiring will make the design more in line with the requirements.

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What kind of PCB stacking strategy helps shield and suppress EMI?

The role of PCB layered stacking in controlling EMI radiation

High Frequency PCB Routing Skills

Calculation of characteristic impedance

Characteristic impedance of the transmission line

Analyze Characteristic Impedance--Basic Concept

Next Generation Design Tools Outlook

Method for solving signal integrity problems in ASIC chip design

Focus on signal integrity in complex designs

EMC design skills inside the product

The importance of layout in high speed PCB design

Electromagnetic compatibility design

Several issues that should be taken seriously by mobile phone PCB design

How to ensure that no noise is added when designing PCB

RF layout tips for mobile phone PCB design

PCB design tips 100, teach you to master PCB design easily (25-30)

Internal EMC design skills - engineers must

Seven Considerations in PCB Design

The core of PCB design and solutions

Techniques of PCB layout and processing defects

Categories

Recommended Article:

BLOG

What kind of PCB stacking strategy helps shield and suppress EMI?

The role of PCB layered stacking in controlling EMI radiation

High Frequency PCB Routing Skills

Calculation of characteristic impedance

Characteristic impedance of the transmission line

Analyze Characteristic Impedance--Basic Concept

Next Generation Design Tools Outlook

Method for solving signal integrity problems in ASIC chip design

Focus on signal integrity in complex designs

EMC design skills inside the product

The importance of layout in high speed PCB design

Electromagnetic compatibility design

Several issues that should be taken seriously by mobile phone PCB design

How to ensure that no noise is added when designing PCB

RF layout tips for mobile phone PCB design

PCB design tips 100, teach you to master PCB design easily (25-30)

Internal EMC design skills - engineers must

Seven Considerations in PCB Design

The core of PCB design and solutions

Techniques of PCB layout and processing defects

Categories

Recommended Article: