Iv. Lindell et F. Olyslager, TE TM DECOMPOSITION OF ELECTROMAGNETIC SOURCES IN A NONRECIPROCAL ANISOTROPIC MEDIUM/, IEE proceedings. Microwaves, antennas and propagation, 145(1), 1998, pp. 109-115
The principle of source decomposition for electromagnetic problems is
considered in the most general homogeneous anisotropic medium in which
electromagnetic fields can be decomposed in two partial fields charac
terised by either TE or TM polarisation with respect to two given comp
lex vectors. It is shown that, for each of the decomposed fields, the
original medium can be replaced by a simpler equivalent medium, allowi
ng one to apply existing analytic Green functions corresponding to eac
h of the equivalent media. The problem of decomposing a given electrom
agnetic source into two parts corresponding to the TE and TM fields is
solved in the case when the two complex vectors are coplanar. As an e
xample, an electric current dipole is decomposed into two current shee
ts in the plane of the complex vectors. The source decomposition princ
iple can be applied for solving field problems involving a homogeneous
anisotropic space of the present type, for which no known analytic fo
rm for the Green dyadic exists.