Patent ID: 8135549

Claim:
A method for calculating the Specific Absorption Rate (SAR) caused in a body by the electric field emitted by a wireless communications device, the method comprising the steps of: using a model of the body in which the SAR value is to be calculated; placing the device in question in proximity to said model; measuring the electric field components at specific points in said model; carrying out said measurements of the electric field components at points of a first and a second surface in said model; letting said measurements comprise measuring a magnitude of the electric field components at said points; using the measured magnitudes in order to determine a phase of the electric field components at said points, such that a complex electric field at said points is determined; using the complex electric field in said points in order to determine the complex electric field over an entire volume of interest in said model; determining the complex field in a first of said surfaces by using the measured field magnitude in the first surface, and an assumed phase value for the first surface, so that a complex field in the first surface is assumed, and the assumed complex field in the first surface is used in order to calculate a complex field E 2 for the second surface; and, using the complex electric field over said entire volume in order to calculate the SAR value caused by said device over said volume.