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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
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JAVA编写的一个简单计算年龄的计算器,首先输入DOG YEARS的数值,HUMAN YEARS得到的结果相应的乘以10 得出!很明朗!
2016-11-01 00:48:01
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ucoslwiptcpip应用心得希望有帮助
2016-07-19 20:41:02
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adc0808的有个应用，c语言源代码控制产生信号源
2016-12-24 10:01:03
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各种matlab算例应用尽有，对matlab的初学者有很大的帮助。
2014-11-24 00:02:02
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Ever wondered how all those COM components that you ve written through the years play along with the
2013-12-18 19:29:04
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This practical, roll-up-your-sleeves guide distills years of ingenious XML hacking into a complete set
2015-11-01 00:17:01
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Advanced UNIX Programming is the long-awaited (19 years!) update to the 1985 original.
2013-12-19 14:54:04
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Over the past years, we have witnessed destructions of various kinds caused by human actions.
2014-11-23 09:57:01
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During the past four years, most of our research activities have been focused on image but also video
2014-11-26 03:54:02
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This is a program that I wrote many years ago.
2013-12-21 07:45:06
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A few years ago I became interested in first person shooter games and in particular how the world levels
2013-12-13 17:50:02
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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
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.-.20.Years-.The.Evolution.of.Walking
2013-06-13 04:30:01
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I ve written some many years ago dynamic Huffman algorithm to compress and decompress data.
2016-05-16 00:28:01
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JLAB is a set of Matlab functions I have written or co-written over the past fifteen years for the purpose
2014-01-26 14:20:01
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After all the years I ve worked with electronics, I still haven t got me one.
2013-12-17 22:22:02
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Computing and the way people use C for doing it keeps changing as years go by.
2013-12-23 01:14:07
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.-.20.Years-.The.Evolution.of.Walking
2024-05-30 17:00:02
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This note describes some key aspects of what C++ is and of how C++ has developed over the years.
2015-09-15 10:19:01
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