作者kkooff (老板我不想延毕)
看板comm_and_RF
标题Re: [问题] 请问为什麽传输线特性组抗大都是50欧姆??
时间Fri Oct 7 19:53:28 2005
※ 引述《greed0331 (...)》之铭言:
: 请问是什麽原因传输线特性组抗大都是50欧姆....
: 单纯只是因为规格吗...还是有什麽特殊的原因..比如跟阻抗匹配之类的有没有关系阿
: 谢谢...
手边的资料:
for coaxial line
-attenuation is lowest when characteristic impedance for coaxial
airlines is 77 ohms.
-power handling capacity peaks at when characteristic impedance for coaxial
airlines is 30 ohms.
所以取中间值 就大约是50 ohms
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◆ From: 140.112.48.80
1F:推 sovereignty:That's it! 10/08 00:19
2F:→ sovereignty:We all live in a 50-Ohm world. 10/08 00:19
3F:推 login22:what's the power handling capacity??? 10/08 11:49
4F:推 ihlin:材料本身能承受的power,多和BreakDownVoltage有关 10/08 14:50