Dipole moment of small circular antenna - only magnetic?

AI Thread Summary
The discussion focuses on the dipole moment of small circular antennas, specifically questioning the absence of an electric dipole moment in contrast to linear dipole antennas, which have both electric and magnetic dipole moments. The only expression encountered is for the magnetic dipole moment, given by m = πr²I at its peak. The inquiry revolves around whether the azimuthal symmetry of the circular antenna cancels out the electric dipole moment, leaving only the magnetic dipole moment. Ultimately, the author concludes that the current's azimuthal symmetry does indeed account for the lack of an electric dipole moment. This highlights the unique characteristics of circular antennas in electromagnetic theory.
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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!
 
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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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