Field and Wave Electromagnetics 2nd Edition by David Cheng

Exercise 37

Assume the spatial distribution of the current on a very thin center-fed half­-wave dipole lying along the z -axis to be I 0 cos z, where = /c - 2 / . Find the charge distribution on the dipole,
(b) Repeat part (a), assuming the current distribution along the dipole to be a triangular function described by