high-speed PCB design

High-Speed PCB Design Guide: Design Guidelines for Mixed-Signal Circuit Boards, Partition Design, and PCB Routing Techniques to Reduce Signal Coupling in RF Product Design

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High-Speed PCB Design Guide: Design Guidelines for Mixed-Signal Circuit Boards, Partition Design, and PCB Routing Techniques to Reduce Signal Coupling in RF Product Design

Part One: Design Guidelines for Mixed-Signal Circuit Boards The operation of analog circuits relies on continuously varying currents and voltages. Digital circuits operate by detecting high or low levels at the receiving end based on predefined voltage levels or thresholds, which corresponds to determining the logical states of “true” or “false”. Between the high and … Read more

Comprehensive Design of Printed Circuit Boards

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Comprehensive Design of Printed Circuit Boards

Printed Circuit Board Comprehensive Design The comprehensive design of a Printed Circuit Board (PCB) is a complex process that involves multiple fields such as electronic engineering, materials science, thermodynamics, and signal integrity. 1. Preliminary Design Preparation 1. Requirement Analysis Functional Requirements: Division of circuit functional modules (power supply, control, communication, etc.) Performance Indicators: Operating frequency, … Read more

From Chip to Module: The Complete R&D and Production Process

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From Chip to Module: The Complete R&D and Production Process

This article is adapted from RFsister Maker RF Space. The development of the Internet of Things (IoT) and smart homes has deepened the interaction between people and objects, making our lives richer, communication more convenient, and connections tighter. The connection between people and objects (devices) relies on wireless networking via the Internet, yet there are … Read more

Routing Between Adjacent Pads of SMT Components

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Routing Between Adjacent Pads of SMT Components

For the layout of SMT components with small pin pitches such as QFP, QFN, and SOP, we sometimes encounter situations where adjacent pins of these components need to be interconnected. It has been observed that many designers, in an effort to save time, directly route the connection between the pads, effectively shorting the pins together. … Read more

PCB Bends: Are Arc Traces Always the Best Option?

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PCB Bends: Are Arc Traces Always the Best Option?

Question: In PCB routing, there are three common types of bends: right angle, 45 degrees, and arc (as shown in the figure below). Which type of bend is the best? This question can be answered relatively easily based on experience, with most people agreeing that arc > double 45 degrees > right angle. However, empirical … Read more

Is Your PCB Design Always Facing Impedance Discontinuity? Here’s a Solution to Your Troubles!

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Is Your PCB Design Always Facing Impedance Discontinuity? Here’s a Solution to Your Troubles!

Introduction:Everyone knows that impedance should be continuous. However, as Luo Yonghao said, “In life, there are always times when you step in something unpleasant,” PCB design also has its moments of impedance discontinuity. What should we do? Characteristic Impedance Characteristic Impedance: Also known as “Feature Impedance”, it is not a DC resistance, but a concept … Read more

Is Feeling That STM32 is Too Simple a Form of Arrogance?

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Is Feeling That STM32 is Too Simple a Form of Arrogance?

In fact, whether something is simple or complex is not important; what matters is what we can learn through STM32. Creating a keyboard/mouse allows us to learn the USB protocol. Building a networked device requires understanding the underlying implementation of Ethernet and TCP/IP protocols. For a wireless device, one might need to learn Bluetooth, Wi-Fi, … Read more

How Engineers Can Improve RS485 Hubs

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How Engineers Can Improve RS485 Hubs

In fields such as industrial automation and remote monitoring, many are familiar with RS485 hubs. However, RS485 has several issues, such as data return delays and insufficient security. How can engineers leverage strengths and mitigate weaknesses to minimize these impacts?! 1. What Issues Exist with RS485 Hubs? Data return delay: The host can send data … Read more

Advanced PCB Design Techniques

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Advanced PCB Design Techniques

Printed Circuit Board Advanced PCB Design Advanced design of Printed Circuit Boards (PCBs) requires a combination of engineering practice, signal integrity analysis, electromagnetic compatibility (EMC) design, and manufacturing processes. The following are the core points and practical tips for advanced design to help you enhance the professionalism and reliability of PCB design. 1.High-Speed Signal and … Read more