IC placement optimization for RF interference based on dipole moment sources and reciprocity

Abstract

A method to optimize the IC placement in mobile devices from RF interference perspective is proposed. The coupling from the IC to an antenna is estimated by combining the equivalent dipole moment source and reciprocity, which facilitates understanding of coupling physics and design insight for the mobile devices. Based on the proposed method, optimal place for the noisy ICs can be quantitatively determined for each frequency of interest.