| Title |
Assessment and Analysis of Human EMF Exposure to UHF RFID System |
| Authors |
Jin-Kyu Byun ; Jae-Hun Yun |
| Keywords |
EMF Exposure ; UHF RFID Antenna ; SAR Calculation ; Reference Levels ; Basic Restrictions ; Antenna Radiation Pattern |
| Abstract |
For human exposure assessment of UHF RFID system, electric field distribution of commercial 900[㎒] RFID antenna was measured and analyzed. Also, SAR(Specific Absorption Rate) of RFID antenna was calculated by simulation, and compared with basic restrictions in EMF guidelines. For EMF exposure assessment according to EN and IEC standards, the reader was tested for the normal operation, and electric field from RFID antenna was measured at various distances and angles. For electric field measurement, narrow band isotropic electric field probe was used, and the measurements were made at 0.3, 0.5, 1.0 and 1.5[m] for every 15[˚] angle from the antenna. Also, the rationale for measurement distance in EN and IEC standards is analyzed from the measurement results. |