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

[Nate Duong]

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

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.

 

[Drakkith]

Does this help?

 

[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]

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

 

[tech99]

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.

 

[tech99]

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.

Thank you for more information.