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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑 $ a% n- z# f% ` s) s3 @
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高速信号设计Guidelines9 U7 G0 b% n$ y+ V7 c0 ?* L
Theoretical Overview: }- a5 x+ L1 y' `8 ^3 @
Some basic understanding is desirable to effectively use the PCB design rules given in this document. It is
( Q7 v6 |; L$ n5 V9 r; E mthen easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout
7 w9 Q$ U$ x6 C7 @& c, ?3 K3 Mbecomes more and more important is because of the trend to faster, higher integrated, smaller form
7 L6 t3 @, S/ u1 Rfactors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation8 f4 \. F0 ~# S+ g
occurs on a PCB. With good layout, many EMI problems can be minimized to meet the required% q; r/ d) G7 @* l! i9 h
specifications.$ T8 z* t) R$ h1 s! F7 f
1.1
1 O2 T$ [. C" l2 Y) }/ E% Y$ ?Electromagnetic InteRFerence and Electromagnetic Compatibility
0 f$ U9 C: z% j E% f# n1 x# S( O( ^Electromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an/ i$ z( B x! T* N8 L
electronic device. This radio frequency energy can be produced by the device itself or by other devices& n, t" l8 F7 S2 _3 d8 B
nearby.
: O O- N1 G" j! G% U) {Electromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI
6 g0 |8 l5 g, t+ bthat would interfere with other equipment and without being affected by EMI from other equipment or the$ J" F; t2 @2 S7 R+ i* k/ l2 ~
environment.$ y3 e8 p, [6 {3 J
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发表于 2022-4-28 13:42
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