Dipole moment of small circular antenna - only magnetic?

  • Thread starter fhc6791
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When making an extension from linear dipole antennas to small circular antennas, I am only coming across expressions for a magnetic dipole moment (as opposed to having just an electric dipole moment for a linear dipole antenna). The expression being:
m = πr2I at its peak

The above expression makes perfect sense and is not the problem, rather why only mention a magnetic dipole moment (M1) and no electric dipole moment (E1). Shouldn't it have one also? Or does its azimuthal symmetry (φ dependence) cancel out the effect, leaving only a magnetic dipole moment?

Thanks in advance. I would appreciate any insights!
 

Answers and Replies

  • #2
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Okay, the more I am really looking at this, I realize that yes, the current is azimuthally symmetric. Sorry to answer my own question!
 

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