I'm searching for a good source to read about Antenna type of Hertzian dipole /plane wave spectrum, I searched on google but didn't find any relevant meaningful material.
thanks alot.

I mean with Hertzian dipole, like its magnitude I*d (current*distance)

 

And may please anyone who passed by those problems of transmission lines/antenna that have the same photo that I attach down would be much appreciated to link me them.

here's link for the photo of the problem: https://ibb.co/w4Xmb0b

here's link for the second photo of the problem: https://ibb.co/98gCYht