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Altium Designer 层叠与阻抗控制技巧

PCB设计
PCB设计
Pub 9/7
50

一、打开层叠管理器

点击 Design > Layer Stack Manager(快捷键 D+K),在顶层视图配置信号层、平面层与介质层。

二、添加与配置层

使用 Add Layer / Add Plane 增加信号层或内电层;单击每层可设置名称、铜厚(Copper Thickness)、介质材料与介电常数(Dielectric Constant)等参数。

三、特征阻抗驱动

切换到 Impedance 页签,勾选 Characteristic Impedance Driven,即可让软件根据目标阻抗自动计算线宽。

四、单端与差分阻抗

典型目标:单端 50 Ω、差分 100 Ω(常见于 USB 差分对为 90 Ω)。在 Single-Coplanar / Diff-Coplanar 等模型中设置目标阻抗与参考层。

五、复用层叠模板

配置好的叠层可通过 Save As Template / Load Template 保存与复用,避免每个工程重复搭建。

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Altium Designer 层叠与阻抗控制技巧

通过 Layer Stack Manager 配置多层板叠层,并使用特征阻抗驱动自动计算满足阻抗要求的线宽。

PCB设计PCB设计
Published 9/7
Altium Designer 层叠与阻抗控制技巧
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