Theory and measurements of unintentional radiators

By characterizing an unknown emitter with equivalent vector electric- and magnetic - dipole moments, we formulate a theoretical basis to express the radiation properties of such an emitter in terms of these unknown dipole moments. Power and relative phase measurements from appropriate ports of a transverse electromagnetic (TEM) cell when the emitter is placed at the cell´s center are proven to be sufficient to determine quantitatively the unknowns and therefore, the radiation characteristics.