Abstract
New analytic expressions for the magnetic and electric fields generated by circular current loops (magnetic dipoles) are derived. They apply to near-zone, Fresnel-zone, and far-zone conditions; they asymptotically reduce to the popular small-loop equations in the far-zone. Analytical expressions for the fields produced by current-carrying conductors are valuable because of their rarity. They offer physical insight and a way to test the numerical methods needed for solving more complex problems. Areas for application include medicine, weapons, and nondestructive testing.
| Original language | English (US) |
|---|---|
| Article number | 5739530 |
| Pages (from-to) | 2029-2033 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 47 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2011 |
Keywords
- Current loop
- electric field
- elliptic integral
- magnetic dipole
- magnetic field
- magnetic vector potential
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering