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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑 2 W9 Z5 m* w. m2 g
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高速信号设计Guidelines$ }" _+ g' h& v/ f5 I+ ]% ]* d
Theoretical Overview: U8 \1 o# I, k4 P0 L) S
Some basic understanding is desirable to effectively use the PCB design rules given in this document. It is
z4 [) Z' Z- [. m8 g, Vthen easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout/ C1 v% `1 O1 Q G
becomes more and more important is because of the trend to faster, higher integrated, smaller form5 u, [( C: c2 U5 O0 Y) n# v5 @
factors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation" h9 u) Y1 ~' u% Y. M+ W1 i2 c
occurs on a PCB. With good layout, many EMI problems can be minimized to meet the required
1 v" P: l: Q8 D& w% Mspecifications.
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7 Y+ d* N8 r" V+ M9 _Electromagnetic InteRFerence and Electromagnetic Compatibility# ~% x3 `" v0 }% V
Electromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an
, \3 k) C) U w8 J5 ielectronic device. This radio frequency energy can be produced by the device itself or by other devices* j& ^. X9 U7 O+ K- m. C, U/ x( `5 o
nearby.
: w& o1 J- X4 [9 H7 g" [+ E; IElectromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI) q* ]. r# i0 O: p& G
that would interfere with other equipment and without being affected by EMI from other equipment or the- ^* q* {* l6 t$ |- F8 [. p. T. [
environment.& v+ f) o. c4 T, |/ U; S
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发表于 2022-4-28 13:42
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