Effects of Crosstalk
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In any electronic systems, it is not practical nor is it necessary to eliminate all the noise, as noise is not a problem until it interferes with the surrounding circuitries or radiates electromagnetic energy that exceeds FCC limits and or degrades the system performance. When noise interferes with other circuits it is called crosstalk. Crosstalk can be transmitted through electromagnetic radiation or electrically coupling, such as when unwanted signals propagate on the power and ground planes or couple onto the adjacent circuits. One of the most challenging problems designers are facing in today’s electronic systems is to determine the source of crosstalk, especially in the case where crosstalk randomly causes system failures. Because components are so tightly packed into a very small printed circuit board (PCB). This chapter outlines the crosstalk mechanisms and design methodologies to minimize the effects of crosstalk.
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