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