An algorithm for an advanced GTEM to ground plane correlation of radiated emission test

Abstract

This paper proposes a new algorithm for radiated emission test correlation between a gigahertz transverse electromagnetic (GTEM) cell and a facility with a ground plane (GP) as open area test sites or semi-anechoic chambers. An unknown source object is regarded as equivalent electric and magnetic dipoles. The far field that is radiated from the dipoles over a GP, is evaluated and correlated with measured powers at the output port of a GTEM cell wherein the object exists. This algorithm considers the relative phases of dipole moments and requires fifteen orientations of a test object. The fields radiated from a notebook computer were measured and several theoretical simulations were performed to analyze accuracy of the proposed algorithm.