NEC-LIST: Variation of capacitance/m along the length of a finite conductor

Hi All,

I am trying to compute the capacitance per meter of a finite vertical
conductor of length 10m, radius = 5cm, which is at 2m above the ground
(Image of the conductor is also considered). When I am ploting "Charge/m
along the length of conductor", the charge at the two end points of the
conductor becomes large as expected compared to the middle sections. Since
capacitance/m is nothing but (charge/m)/Volt, than the capacitance/m curve
along the length of the conductor should follow the same characteristics
as charge/m and that is what has been observed by us. However, in the
published literature, we see that capacitance/m value reduces with height,
highest being at the bottom section and the progressively reducing which
is not the same as the charge/m curve.

Can anybody clarify what is the anomaly in this?

With regards

Sisir

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