Theory of Transmission of Electromagnetic Waves along a Drill Rod in Conducting Rock
- 1 April 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Geoscience Electronics
- Vol. 17 (2) , 21-24
- https://doi.org/10.1109/tge.1979.294624
Abstract
We present an analysis of the electromagnetic fields excited by a toroidal cofl that is coaxial with a circular metal rod located in a conducting medium. The integral representation for the induced axial current on the rod is cast in a form that is suitable for numerical evaluation. Some results for the electric current distribution on the infinitely long configuration are given for a fixed magnetic current source. Good agreement is obtained with an asymptotic estimate for this quantity. The effects of truncating the bottom end of the rod and terminating the top in an ideal ground plane are treated by an approximate method. Numerical results for this confilguration are also given.Keywords
This publication has 2 references indexed in Scilit:
- Electromagnetic Wave Propagation Along a Buried Insulated WireCanadian Journal of Physics, 1972
- Asymptotic behavior of the current on an infinite cylindrical antennaJournal of Research of the National Bureau of Standards, Section D: Radio Propagation, 1963