Method and device for measuring the specific absorption rate of electric power in a simulated human body

DETAILED DESCRIPTION Accordingly, an object of the present invention is to provide a measuring method and a measuring device of the SAR that makes it possible to measure the SAR on the surface of a human body with high accuracy when the human body is approached to an antenna.
The above object together with others not specifically mentioned will become clear to those skilled in the art from the following description.
According to a first aspect of the present invention, a measuring method of the SAR is provided, which comprises the following steps.
A first step is to prepare a probe for receiving at least one of two orthogonally-intersecting magnetic fields.
A second step is to place a simulated biological body having approximately the same dielectric constant and approximately the same permeability as those of a human body at a wanted point.
A third step is to separately measure a first magnetic field radiated from an antenna and a second magnetic field generated by reflection of the first magnetic field on the surface of the simulated biological body at different measuring points by using the probe.
A fourth step is to calculate a compensated magnetic field using the measured values of the first and second magnetic fields in the third step.
A fifth step is to calculate a current distribution of the antenna by using the calculated values of the compensated magnetic field.
A sixth step is to calculate the strength of an incident magnetic field on the surface of the simulated biological body by using the calculated current distribution of the antenna.
A seventh step is to evaluate the SAR using the calculated value of the strength of the incident magnetic field and a distance between the antenna and the simulated biological body.
With the measuring method according to the first aspect of the invention, since the probe is able to receive at least one of the two orthogonally-intersecting magnetic fields, the first magnetic field radiated from the antenna and the second magnetic field generated by reflection of the first magnetic field on the surface of the simulated biological body can be separately measured at the different measuring points