Method and device for measuring the specific absorption rate of electric power in a simulated human body
US5789929A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Dec 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/0857
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring method of the SAR is provided, which 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. After a probe for receiving at least one of two orthogonally-intersecting magnetic fields is prepared, a simulated biological body having approximately the same dielectric constant and approximately the same permeability as those of a human body is placed at a wanted point. 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 are separately measured at different measuring points by using the probe. A compensated magnetic field is calculated using the measured values of the first and second magnetic fields. A current distribution of the antenna is calculated by using the calculated values of the compensated magnetic field. The strength of an incident magnetic field on the surface of the simulated biological body is calculated by using the calculated current distribution of the antenna. The SAR is evaluated by using the calculated value of the strength of the incident magnetic fiel…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.