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Zo of two wire open line
On Sun, 10 Feb 2008 00:08:33 GMT, Owen Duffy wrote:
I have found two common expressions for the Zo of a two wire line in space. One expression is Zo=276log(D/d). The second is Zo=120acosh(D/d). Hi Owen, I have the following expressions found in "Reference Data for Radio Engineers," 22-22 Transmission Lines: Zo = 120 acosh(D/d) Zo ~ 276 log(2D/d) Zo ~ 120 Ln(2D/d) where the symbol ~ means "approximately equal to." 73's Richard Clark, KB7QHC |
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