highspeeddesign3 New Products New Technologies New Tech New Product Signal Integrity Design of High-Speed Electronic Circuits (III) Signal Integrity Design of High-Speed Electronic Circuits (III) Yu Bo, Department of Electronic Engineering, Beijing Institute of Technology 5. Crosstalk Analysis In today\'s rapidly developing electronic design field, high speed and miniaturization have become a trend. How to maintain and improve the speed and performance of the system while reducing the size of the electronic system has become an important issue facing designers. Higher signal frequencies, steeper edges, smaller printed circuit board sizes, and increased wiring density have all made crosstalk an increasingly noteworthy issue. As electronic engineers continue to push designs to the limits of technology and processes, crosstalk analysis has become increasingly important. The crosstalk problem discussed in this section is an issue that needs to be considered in high-speed and high-density circuit design. The following simulation results are all completed using Mentor Graphics\' Interconnect Synthesis (IS) software. 5.1. Basic Concepts of Crosstalk Crosstalk refers to the unwanted voltage noise interference caused by electromagnetic coupling to adjacent transmission lines when a signal propagates on a transmission line. Excessive crosstalk may cause false triggering of the circuit, resulting in the system not being able to work properly. Crosstalk is formed by electromagnetic coupling, which is divided into capacitive coupling and inductive coupling. Capacitive coupling is electromagnetic interference caused by the voltage change on the aggressor causing an induced current on the victim, while inductive coupling is electromagnetic interference caused by the magnetic field generated by the current change on the aggressor causing an induced voltage on the victim. Therefore, when a signal passes through a conductor, it will cause two different types of noise signals on the adjacent conductor: capacitive coupling signals and inductive coupling signals. 5.2. Crosstalk analysis of several typical situations Let\'s take Figure 13 as an example to introduce the relevant terms of crosstalk. In the figure, if the driving source at point A is called the aggressor, the receiver at point D is called the victim, the wire network between A and B is called the aggressor network, and the wire network between C and D is called the victim network; conversely, if the driving source at point C is called the aggressor, the receiver at point B is called the victim network.
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