Abstract
The possibility of finding an analytic Green dyadic expression for a class of bianisotropic media, defined by the relations , , and between the medium parameter dyadics, is studied. It is shown that the determinant of the dyadic Helmholtz operator, an operator of fourth order, can be expressed as a product of two second-order operators. A method for finding the solution for the Green dyadic in the form of infinite series in terms of powers of the dimensionless parameter ξζ/μoϵo is given. For small values of the parameter, a two-term approximation is seen to take a simple analytic form. As an Appendix, another approach through the Fourier transformation is briefly discussed. Dyadic formalism is applied throughout in the analysis. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 19: 216–221, 1998.
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