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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑 " ~. G5 X! t- _# D# Y
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高速信号设计Guidelines- l. ]( Q1 e. D! H s/ w
Theoretical Overview, _4 F/ g# X$ d" O# R2 o
Some basic understanding is desirable to effectively use the PCB design rules given in this document. It is; v# e$ g& a2 P) e3 l
then easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout
4 e# n" a% M3 v. b6 Vbecomes more and more important is because of the trend to faster, higher integrated, smaller form' W0 a# ~% q9 I7 R) m, N0 c5 p
factors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation! d! D6 E4 O0 ^# l& |% j+ c
occurs on a PCB. With good layout, many EMI problems can be minimized to meet the required
, z) y' R% [, R; m9 d: [2 a0 t5 @specifications.
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* g5 E( p8 J$ W& c$ x6 UElectromagnetic InteRFerence and Electromagnetic Compatibility
$ [; j: g/ @% x9 s5 KElectromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an
$ j6 W) \; ^& K# lelectronic device. This radio frequency energy can be produced by the device itself or by other devices/ T7 f3 o4 I K0 k1 H* T
nearby.
: D0 l, I3 G2 K; ^Electromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI7 v3 L( G; [, M x* {
that would interfere with other equipment and without being affected by EMI from other equipment or the5 i- L7 M d: ?+ E3 ?! S5 g
environment.
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发表于 2022-4-28 13:42
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