Radiation and scattering in homogeneous general biisotropic regions

Solutions to Maxwell's equations for a four-parameter biisotropic medium are analyzed. A field decomposition provides remarkable simplification in the derivation of solutions and provides a qualitative picture of biisotropy. Green's dyadics and the Cherenkov radiation description are easily derived. A broad class of biisotropic materials that is not optically active is found (for instance, Cherenkov radiation and dipole radiation are linearly polarized). Green's dyadics for a more general constitutive relation, which includes diffusion terms, are solved in terms of the biisotropic solutions. Huygens' principle is obtained and applied in surface integral equation form to the problem of a thin linear antenna in order to demonstrate the feasibility of upgrading existing numerical codes to handle the case of biisotropic materials.>