![]() Some older computers even radiated so much EMI that they were eventually taken off the market. For years, flight attendants urged us to shut down our cell phones or we were annoyed with radios that produced static instead of clear audio. The effects of interference on the operation of electronic devices can be pretty dramatic. Potential Problems Due to Poor Signal Integrity To successfully design high-speed electronics, it is essential for the designer to understand signal integrity fundamentals. ![]() This involves every aspect of PCB design, including the parts used, the fabrication of the raw circuit board, and how the parts are arranged and connected together. ![]() To prevent these disruptions and failures, printed circuit boards need to be placed and routed according to specific design criteria to foster the best environment for transmitting high-speed signals. This can result in all kinds of problems in the electronics we design, from intermittent disruptions to outright failures. However, signals that are degraded, or have poor signal integrity, may not accomplish their intended purpose. We trust those signals to do the job that they were designed to do. This is why integrity is also used to define the quality of a high-speed electrical signal in modern electronic devices and systems. One of the defining characteristics of integrity is a consistent and uncompromising behavior that can be trusted. Layout tools and features that can help improve signal integrity PCB layout techniques for good signal integrity
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