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

  1. Apr 25, 2017 #1
    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.
     
    Last edited by a moderator: May 8, 2017
  2. jcsd
  3. Apr 25, 2017 #2

    Drakkith

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    Staff: Mentor

    Does this help?

    Felder_um_Dipol.jpg
     
  4. May 1, 2017 #3
    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?
     
  5. May 1, 2017 #4

    Drakkith

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    Staff: Mentor

    Sorry, I don't have any in-depth references for you. :frown:
     
  6. May 1, 2017 #5

    tech99

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    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.
     
  7. May 5, 2017 #6

    tech99

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    Gold Member

    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.
     
  8. May 5, 2017 #7
    Thank you for more information.
     
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