ANTENTOP- 03- 2003, # 004

Going back to that reference we can see on page 109 Fig.1 a current distribution on 1/4 wave radiator.

This is a true representation and shows the last 30 degrees "linearized", which is OK for simplification, but it introduces an error, which could magnify in precise calculations and modeling. 

This is expanded in Fig. 2,

http://www.antentop.org/

Page 53