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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑
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# i8 J. z& e4 ~" y8 l7 D高速信号设计Guidelines' i- n0 w/ R2 p" {6 b2 r
Theoretical Overview
3 X2 j1 s# g, ? [- Q# jSome basic understanding is desirable to effectively use the PCB design rules given in this document. It is
5 S9 l1 z1 C0 E& R$ x( @2 mthen easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout
' x+ x, e% q! g: @' mbecomes more and more important is because of the trend to faster, higher integrated, smaller form* Y1 d5 h$ W. _& p7 W, t& a
factors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation
; C; ]0 G; M5 g. ~% q" c% M2 Doccurs on a PCB. With good layout, many EMI problems can be minimized to meet the required% M& C4 h3 J5 M. X! J
specifications.* f- Q/ k' b U$ |" W
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Electromagnetic InteRFerence and Electromagnetic Compatibility% q4 @2 {/ a/ o- a
Electromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an
. b I, ~/ T' D' N2 Y- Ielectronic device. This radio frequency energy can be produced by the device itself or by other devices
9 @( y& j% X, U9 y& ]: Unearby.
1 R& @. z. c3 o: k0 rElectromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI
- e# L( K0 v/ Q( `+ e! Athat would interfere with other equipment and without being affected by EMI from other equipment or the2 x! R* O' \- K" q& L$ `9 ]( F
environment.% x, D: ?3 H% e$ P
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/1 
发表于 2022-4-28 13:42
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