Hertzian dipole generating EM Waves.

AI Thread Summary
The discussion focuses on deriving the electric (E) and magnetic (B) fields from the vector potential (A) and scalar potential (phi) of a Hertzian dipole. The original poster notes that only the theta component of the E field seems to exist, involving parameters like omega and I0. A participant suggests that taking the curl of the vector potential should yield the magnetic field, indicating a straightforward approach to the problem. A resource link is provided for further clarification on the topic. The conversation emphasizes the need for understanding the relationship between potentials and electromagnetic fields in dipole radiation.
polystethylene
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Hi, in my notes for the Hertzian Dipole I have a derivation of the vector potential A, and the scalar potential (phi). However, I'm missing the derivation of the E and B fields from these potentials. It seems that only the theta component of the E field exists, and I have ... well, I can't write it out because I don't how to use the webcode to equations... but it has omega, I0 (current), sin(theta), and another sine term, but with an argument that is omega x the retarded time.

Anyone got any clues? Or even an idea of what I'm trying to say? (I realize the question is a little sketchy)
 
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hi, polystethylene:
Here is something you need: please read the weblink first; if you still have problem, please contact me! :smile:http://www.ece.rutgers.edu/~orfanidi/ewa/ch15.pdf"
 
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If you've got the vector potential, take the curl to get the magnetic field? I don't see where the problem is.
 

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