[Antennas] Back to Basics
Ronald KA4INM Youvan
[email protected]
2003年7月08日 02:16:40 +0000
> Since impedance is dependent on the frequency involved, what is the
> basis for 52 ohm coax, and how does it differ from 75 ohm Coax?
Well this is true for reactive items, such as antennas, but not for
transmission lines, for coax it is the result of the ratio of the
outer diameter of the inner vrs the inner diameter of the outer
conductors modified by the the dielectric surrounding the conductors.
For twin lead it the ratio of the conductor's diameter to the
distance between the conductors modified by the dielectric
surrounding the conductors. Or some such.
--
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