[time-nuts] 75Z vs 50Z for GPS receivers
brooke at pacific.net
Mon Jan 29 17:21:18 EST 2007
The corner frequency is mainly becuase of the capactance at low
frequencies. A transmission line at audio frequency looks like a shunt
capacitor and the inductance no longer is working aginst it, so you
don't get a real Zo but instaed capactance. Loss really does not come
In the RG-58 plot at:
http://www.pacificsites.com/~brooke/Zo.shtml#RG58 the resistance is
only 1.4 Ohms and is not a factor.
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
Hal Murray wrote:
>>acc. my understanding, the characteristic impedance of a transmission
>>line (ideally losseless) is constant and waveform independant,
>The catch is we are discussing the non-lossless case.
>The corner frequency is where the losses become significant.
>I think there is another corner where the skin effect on the center conductor
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