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I'm trying to find the input impedance of an OCF dipole and I need a sanity check by one of the more experienced guys here. Now, I have assumed that the voltage and current distribution along the line is always the same, no matter where you feed the antenna at [1]. The radiation resistance doesn't seem to be affected, I was looking at the notes in [2]. So that leaves us with the [itex]sin^2 (\beta l/2)[/itex] term in equations 9.37-9.38, controlling the input impedance.

Am I making sense?

Thanks,

Hasan

[1] http://www.radioelectronicschool.net/files/downloads/ocfdipole.pdf [Broken]

[2] http://www.ece.mcmaster.ca/faculty/nikolova/antenna_dload/current_lectures/L09_Dipole.pdf

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# Radiation Resistance of an off-centre fed dipole

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