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Impedance control is related to many factors, such as the characteristics of the PCB, where it is used, etc. If the PCB is designed for digital signals, it is generally differential impedance, which is different from the application of RF signals. However, in these two categories of applications, more subcategories can be subdivided for discussion….

PCB is also known as printed circuit board (Printed Circuit Board). It can realize the line connection and function realization between electronic components, and is also an important part of power circuit design. Today, this article will introduce the high-frequency circuit wiring skills in PCB design. Multilayer board wiring: High-frequency circuits are often highly integrated…

What is an excellent PCB design? Let’s talk about the working methods and working habits during design, which will make your design more reasonable, easier to produce, and better in performance. 1 Production requirements The requirements for board material, board thickness, copper thickness, process, solder mask/character color, etc. are clear. The above requirements are the…

This article interprets the four basic characteristics of RF circuits from four aspects: RF interface, small desired signal, large interference signal, and interference from adjacent channels, and gives important factors that need special attention in the PCB design process. RF interface of RF circuit simulation Conceptually, wireless transmitters and receivers can be divided into two…

With the vigorous development of the PCB industry, more and more engineering and technical personnel have joined the design and manufacture of PCBs. However, since PCB manufacturing involves many fields and a considerable number of PCB design engineers (Layout personnel) have not engaged in or participated in the production and manufacturing process of PCBs, the…

Everyone knows that making a PCB board is to turn the designed schematic diagram into a real PCB circuit board. Please don’t underestimate this process. There are many things that work in principle but are difficult to achieve in engineering, or things that others can achieve but others can’t. Therefore, it is not difficult to…

As an electronic engineer, designing circuits is a necessary hard work. However, no matter how perfect the principle design is, if the circuit board design is unreasonable, the performance will be greatly reduced, and in serious cases, it may not work properly. Based on my experience, I have summarized the following points that should be…

This paper discusses some layout and wiring related principles that need to be paid attention to in the process of using PROTEL design software to realize high-speed circuit printed circuit board design, and provides some practical and verified high-speed circuit layout and wiring technologies to improve the reliability and effectiveness of high-speed circuit board design….

There are many ways to solve EMI problems. Modern EMI suppression methods include: using EMI suppression coatings, selecting appropriate EMI suppression parts and components, and EMI simulation design. This article starts from the most basic PCB layout and discusses the role and design techniques of PCB layer stacking in controlling EMI radiation. Power bus Reasonably…

Grounding is one of the important means to suppress electromagnetic interference and improve the electromagnetic compatibility of electronic equipment. Correct grounding can not only suppress the influence of interference, but also suppress the interference radiated by the equipment; on the contrary, incorrect grounding will introduce serious interference and even make the electronic equipment unable to…