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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑 : _1 T1 c7 _! @4 G
- k$ Y& r% ?4 L$ R- w1 I高速信号设计Guidelines( f( {* o6 g0 P
Theoretical Overview
- m( X2 Q* I% i( e1 Q& DSome basic understanding is desirable to effectively use the PCB design rules given in this document. It is
Z E3 h8 V4 j0 } d9 }5 sthen easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout
$ ?8 y. {( G9 p) u- P# W% _) A- |becomes more and more important is because of the trend to faster, higher integrated, smaller form
1 r! \$ e7 z" w0 ^$ ?factors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation
; b, E! A' u8 L7 Soccurs on a PCB. With good layout, many EMI problems can be minimized to meet the required+ P. k1 u# i; I+ y; `6 U! i+ @4 k
specifications.
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Electromagnetic InteRFerence and Electromagnetic Compatibility
c' s/ L% \7 ]# GElectromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an% X% _' ^: Z. Z" G
electronic device. This radio frequency energy can be produced by the device itself or by other devices
( S- f# E3 }# v _3 w8 ]- N$ wnearby.
) Y' g: L0 @( w4 L6 `7 ?7 ~/ qElectromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI$ b6 m4 d5 r0 [( ^9 [- @) ]
that would interfere with other equipment and without being affected by EMI from other equipment or the g$ ^& h2 b0 m
environment.
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/1 
发表于 2022-4-28 13:42
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