# What do electric and magnetic fields look like around a dipole antenna?

I am studying to about maxwell's equations on the electric and magnetic field.

First of all, just do the example and exercise: https://www.princeton.edu/ssp/josep...ide-to-maxwells-equations-D.-FleischLEISC.pdf [Broken]

I have this dipole antenna: http://www.universal-radio.com/catalog/hamantht/1204.html and trying to understand what are electric and magnetic field look like around dipole antenna? and what direction do I expect for the electric field to be in distance d? and if I have 2 same antennas, 1 is right next to me and another is 6km away, what do you expect to see the one in 6km away? I assume the distance between I and the dipole antenna is d.

If anyone has good video link or pdf link in detail what those fields look like, that would be nice, I would like to have more visualization by video or images.

Thank you.

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## Answers and Replies

Drakkith
Staff Emeritus
Does this help?

AlexCaledin, davenn and Nate Duong
Does this help?

View attachment 196985
It is helped, but for the visualization.
Do you have any information (links, or book) in detail for this topic? if I have 2 same antennas, 1 is right next to me and another is 6km away what direction do I expect for the electric field to be in distance d? and what do you expect to see the one in 6km away?

Drakkith
Staff Emeritus
Sorry, I don't have any in-depth references for you.

tech99
Gold Member
It is helped, but for the visualization.
Do you have any information (links, or book) in detail for this topic? if I have 2 same antennas, 1 is right next to me and another is 6km away what direction do I expect for the electric field to be in distance d? and what do you expect to see the one in 6km away?
I think they are getting at the idea that the lines are not curved when considered over the dimensions of a typical antenna at a great distance.

Nate Duong
tech99
Gold Member
I think they are getting at the idea that the lines are not curved when considered over the dimensions of a typical antenna at a great distance.
As a matter of interest, Hertz published his idea of field lines in one of his papers, and they are reproduced in Antennas by J D Kraus. I am not certain that the pictures correctly show the induction fields close to the antenna.

Nate Duong
As a matter of interest, Hertz published his idea of field lines in one of his papers, and they are reproduced in Antennas by J D Kraus. I am not certain that the pictures correctly show the induction fields close to the antenna.