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【pdf】【221k】EMC的LineSim和BoardSim仿真
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[EMC仿真]
【pdf】【221k】EMC的LineSim和BoardSim仿真
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发表于: 2008-10-06 15:24:45
EMC的LineSim和BoardSim仿真
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EMC的LineSim和BoardSim仿真
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目录
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第一章 什么是 LINESIM 和 BOARDSIM 仿真.................................................................................................3
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1.1 电磁辐射与信号完整性...........................................................................................................................3
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第二章 大纲:EMC 技术背景........................................................................................................................3
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2.1 为什么出现辐射.......................................................................................................................................3
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2.2 差摸辐射与共模辐射...............................................................................................................................3
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2.3 远场辐射与近场模辐射(FAR-FIELD AND NEAR-FIELD RADIATION).........................................................3
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2.4 周期信号辐射与无规则信号辐射(PERIODIC AND RANDOM SIGNALS)......................................................4
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2.5 来自 IC 封装的辐射(仅 BOARDSIM EMC)...............................................................................................4
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2.6 系统结构以及外壳的作用.......................................................................................................................4
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2.7 EMC 的政府指标........................................................................................................................................4
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第三章 EMC 仿真的局限性...........................................................................................................................5
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3.1 EMC 仿真的先决条件................................................................................................................................5
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3.2 只能预测差模辐射和元件封装辐射.......................................................................................................5
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3.3 BOARDSIM EMC 对于产生干扰的源网络的辐射不能预测.........................................................................5
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3.4 BOARDSIM EMC 辐射分析的误差.................................................................................................................5
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3.5 LINESIM EMC 的特殊限制..........................................................................................................................5
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第四章 大纲:EMC 运算法则描述(略)........................................................................................................6
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第五章 运行 EMC 仿真...................................................................................................................................7
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摘要:...............................................................................................................................................................7
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5.1 仿真前的要求............................................................................................................................................7
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5.2 设置频谱分析探头....................................................................................................................................7
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5.2.1 设置天线以及电流探头........................................................................................................................7
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5.2.2 辐射测量的单位....................................................................................................................................8
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5.2.3 什么时候使用电流探头........................................................................................................................8
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5.3 设置天线....................................................................................................................................................8
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5.3.1 设置天线距离........................................................................................................................................8
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5.3.2 设置天线和 PCB 板位置........................................................................................................................8
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5.3.2.1 设置自动方式...................................................................................................................................8
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5.3.3 选择何种源来测量辐射........................................................................................................................8
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5.3.3.1 允许封装辐射检测(仅适用于 BoardSim EMC)..........................................................................9
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5.3.3.1.1 什么时候选择封装辐射的开和关...............................................................................................9
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