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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑 ) ~" b# I0 G5 w7 N6 m9 L, E
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高速信号设计Guidelines
; e! i/ s; j: `0 p+ I7 l7 wTheoretical Overview5 q' s& v' B, j6 }' V( a; }
Some basic understanding is desirable to effectively use the PCB design rules given in this document. It is6 z$ N* l" n( E. s# ^+ O
then easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout* c, O+ \6 i6 v6 ]# i* b! V4 P
becomes more and more important is because of the trend to faster, higher integrated, smaller form3 @' m U4 S9 \1 c8 ?
factors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation
7 [7 l1 O# E" _( }' r2 E Ioccurs on a PCB. With good layout, many EMI problems can be minimized to meet the required
K% l% S! ]4 t# x2 y% xspecifications.
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Electromagnetic InteRFerence and Electromagnetic Compatibility' e! K( M, ~4 G. g0 J8 k. y& b
Electromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an0 x* N5 z3 {+ {1 n- r# L8 ]/ V! F2 v
electronic device. This radio frequency energy can be produced by the device itself or by other devices( j) O1 V" b% c* ~9 P/ [7 R2 k/ _
nearby.
6 ]6 k5 y0 G3 _- J6 [7 s' nElectromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI
8 p! c: q( l/ Nthat would interfere with other equipment and without being affected by EMI from other equipment or the. n) [; X5 V% g- h8 r
environment.) w. ^7 R7 ] e2 e
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发表于 2022-4-28 13:42
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