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发表于 2008-8-11 13:42:51
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75 ohm is best for receiving,
23 ohm is best for transmitting,
so 50 ohm is a compromise for mobile applications which require both
receiving and transmitting.
there are also 300 ohm
就是与50欧姆同轴线的阻抗匹配 达到功率最大
一个是37.5 ohm, 还有一个是75 ohm,
这个两个一个是best power handling capability, 还有一个忘了
think designing an antenna that way is trying to match the impedance of
the coax cable. |
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