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高速PCB设计中的阻抗匹配 你都知道哪些

阻抗匹配是指在能量传输时,要求负载阻抗要和传输线的特征阻抗相等,此时的传输不会产生反射,这表明所有能量都被负载吸收了。反之则在传输中有能量损失。在高速线路板打样设计中,阻抗的匹配与否关系到信号的质量优劣。

1、PCB走线什么时候需要做阻抗匹配?

不主要看频率,而关键是看信号的边沿陡峭程度,即信号的上升/下降时间,一般认为如果信号的上升/下降时间(按10%~90%计)小

2022-09-09 08:00:02 下载 2 查看 5,228
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ucoslwiptcpip应用心得希望帮助

ucoslwiptcpip应用心得希望帮助
2016-07-19 20:41:02 下载 178 查看 1,024
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adc0808的应用

adc0808的应用,c语言源代码控制产生信号源
2016-12-24 10:01:03 下载 65 查看 1,025
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各种matlab算例应用

各种matlab算例应用,对matlab的初学者很大的帮助。
2014-11-24 00:02:02 下载 120 查看 1,041
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vhdl source,ver-fir-coefficient,simulink of fir with soft ware input

vhdl source,ver-fir-coefficient,simulink of fir with soft ware input
2013-12-23 10:44:02 下载 186 查看 1,052
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This program is show how to use java to make a view like an normal soft.

This program is show how to use java to make a view like an normal soft.
2016-06-04 20:30:01 下载 190 查看 1,103
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设计和选用电源模块应考虑哪些性能参数

同样的输入输出电压、同样的功率、同样的封装,不同厂家的电源模块,哪个性能更好?对于一个性能优良的电源模块来说,需要测试的项目很多,而且这些性能之间是紧密联系的,本文挑选其中几个方面的性能进行对比阐述。
2022-12-23 20:20:02 下载 1 查看 6,228
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TI Algorithm Soft Kit 5.10 仅包括实例及其原代码

TI Algorithm Soft Kit 5.10 仅包括实例及其原代码,可用于ccs2.20.18以及Studio3.1上使用。
2013-12-27 18:26:02 下载 109 查看 1,086
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[ http://www.moon-soft.com ] 里面有更详细的内容

[ http://www.moon-soft.com ] 里面有更详细的内容
2013-12-27 08:45:09 下载 170 查看 1,071
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For this reason, iterative soft decoding has been studied to approach the optimal ML decoding perf

For this reason, iterative soft decoding has been studied to approach the optimal ML decoding performance
2014-01-21 01:35:12 下载 34 查看 1,112
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一个关于Soft-ICE的说明档,收藏用

一个关于Soft-ICE的说明档,收藏用,感觉还好
2016-03-09 10:24:01 下载 130 查看 1,049
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Huawei doc,you are a soft engineer ,you need read it ,and do much work.

Huawei doc,you are a soft engineer ,you need read it ,and do much work.
2013-12-17 04:01:07 下载 85 查看 1,042
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serialwatcher is small and powerful soft to captute d芒t from PC com port

serialwatcher is small and powerful soft to captute d芒t from PC com port
2017-04-20 10:27:02 下载 120 查看 1,067
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This tutorial presents an introduction to Altera’s Nios R II processor, which is a soft processor

This tutorial presents an introduction to Altera’s Nios R II processor, which is a soft processor that
2014-12-08 15:30:03 下载 102 查看 1,107
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628512在实际电路中的应用图纸,实际应用的意义.

628512在实际电路中的应用图纸,实际应用的意义.
2013-12-28 00:22:08 下载 125 查看 1,071
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The soft-engineer ralated data is ready for your study,for the stylist ,for some people having the c

The soft-engineer ralated data is ready for your study,for the stylist ,for some people having the common
2014-01-26 21:06:14 下载 193 查看 1,107
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Computes BER v EbNo curve for convolutional encoding / soft decision Viterbi decoding scheme assum

Computes BER v EbNo curve for convolutional encoding / soft decision Viterbi decoding scheme assuming
2013-12-24 07:31:06 下载 71 查看 1,072
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Very suitable for beginners to use JAVA development PPT course equipped with Microsoft s office soft

Very suitable for beginners to use JAVA development PPT course equipped with Microsoft s office software will be able to view the open let us begin
2013-12-18 21:00:03 下载 77 查看 1,067
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This is sofe input and soft output programme you can use. Matlab is the similation tool.

This is sofe input and soft output programme you can use. Matlab is the similation tool.
2017-06-21 00:41:02 下载 148 查看 1,139
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JAVA相关基础知识 1、面向对象的特征哪些方面 抽象: 抽象就是忽略一个主题中与当前目标无关的那些方面

JAVA相关基础知识 1、面向对象的特征哪些方面 抽象: 抽象就是忽略一个主题中与当前目标无关的那些方面,以便更充分地注意与当前目标有关的方面。
2017-01-04 00:29:02 下载 147 查看 1,068
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