The end correction for a coaxial line when driving an antenna over a ground screen

Theoretical and experimental results obtained by Hartig for the end correction for a coaxial line when driving an antenna over a ground screen are corrected. Improved theoretical and experimental curves of the quantity
-C_{T}/bc_{0}
are obtained, where
-C_{T}
is the lumped negative capacitance required as end correction,
c_{0}
is the capacitance per unit length of the coaxial line, and
b
is the inner radius of the outer conductor of the line.