Symmetry transformations and time reversal of currents and fields in bounded (Bi)anisotropic media
Abstract
Schatzberg and Altman (1981) have shown that application of scattering theorems to the plane-wave spectrum of arbitrary current distributions, followed by resynthesis of the scattered plane-wave spectrum, leads to Lorentz-type reciprocity in real space between currents and fields in a given and reflected problem. Altman and Schatzberg (1982) have extended this result to media possessing a wide range of structural and spatial symmetry. In the present investigation, these results are systematized and extended to spatial regions bounded by dyadic wall impedances. The two basic classes of transformations are identified as those which leave Maxwell's equations invariant, and those which convert them into the adjoint set of equations.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- November 1984
- DOI:
- 10.1109/TAP.1984.1143226
- Bibcode:
- 1984ITAP...32.1204A
- Keywords:
-
- Anisotropic Media;
- Current Distribution;
- Electromagnetic Fields;
- Electromagnetic Scattering;
- Transformations (Mathematics);
- Maxwell Equation;
- Reciprocity Theorem;
- Symmetry;
- Time Functions;
- Communications and Radar