Introduction
Model development
Antenna model
User head model
Tissue
|
Brain diameter (mm)
|
Skull thickness (mm)
|
Skin thickness (mm)
|
---|---|---|---|
4 year child
| 136.1 | 3.1 | 3.6 |
8 year child
| 140.6 | 3.5 | 4 |
Adult
| 160.1 | 8.9 | 7.2 |
Permittivity
| 52.7 | 12.5 | 35.2 |
Conductivity (S/m)
| 0.94 | 0.14 | 0.60 |
Hand held device model
Measurement of power absorbed
Specific absorption rate
Thermal effects
Numerical results and discussions
FDTD simulations
Evaluation of antenna in free space
Current distribution and S- parameters
Radiation pattern and efficiency
Mobile phone interaction with head model
SAR analysis
Model
|
4-year child
|
8-year child
|
Adult
|
---|---|---|---|
1-g SAR (W/Kg)
| 20.47 | 14.27 | 4.27 |
10-g SAR (W/Kg)
| 8.13 | 6.92 | 2.78 |
Max SAR (W/Kg)
| 149.9 | 73.10 | 11.15 |
Average SAR (W/Kg)
| 0.52 | 0.48 | 0.168 |
Model
|
4-year child
|
% decrement
|
8-year child
|
% decrement
|
Adult
|
% decrement
|
---|---|---|---|---|---|---|
1-g SAR (W/Kg)
| 9.709 | 52.5 | 5.825 | 59.2 | 2.13 | 50.1 |
10-g SAR (W/Kg)
| 4.43 | 45.5 | 3.24 | 53.1 | 1.35 | 51.4 |
Max SAR (W/Kg)
| 65.77 | 55.5 | 23.90 | 67.3 | 6.36 | 42.9 |
Average SAR (W/Kg)
| 0.32 | 38.9 | 0.243 | 49.3 | 0.095 | 43.15 |