Electromagnetic fields of dipoles in stratified media
Abstract
A general theory for the electromagnetic fields of dipoles in stratified isotropic media is outlined. The stratified model consists of a stack of layers sandwiched between two semiinfinite media. Either an electric or a magnetic dipole can be placed at any position in the stack, or in the upper or lower halfspace. Dipoles can be electric or magnetic and can be oriented horizontally or vertically. The fields in the layer containing the source are given in terms of reflection coefficients, impedance and admittance terms, and wavenumber ratios. Recursion relation are developed to propagate the Hankeldomain field coefficients to other layers or to the half spaces. This allows the observation point to be placed anywhere except at the source. Numerical checks show that the derived algebra is at least selfconsistent.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 July 1977
 DOI:
 10.1109/TAP.1977.1141618
 Bibcode:
 1977ITAP...25..547S
 Keywords:

 Dipole Antennas;
 Electric Dipoles;
 Electromagnetic Fields;
 Magnetic Dipoles;
 Sandwich Structures;
 Electrical Impedance;
 Ground Effect (Communications);
 Half Spaces;
 Hankel Functions;
 Recursive Functions;
 Reflectance;
 Stratification;
 Communications and Radar