Figure 1.
a) Sagittal cross sections of the multi tissues head model at the middle slice; b) Sagittal cross section of the homogenous head shape phantom model at the middle slice; c) Homogeneous rectangular shape phantom model.
Figure 2.
Simulated antenna geometry and its location.
a) Geometry of the implanted rectangular antenna; b) Antenna position inside the head model (sagital view of the head model is shown), the color bar scale represents the relative permittivity values.
Figure 3.
Effects of thin insulating layers on the input impedance of the implanted antenna inside the head model.
Figure 4.
Simulation results of antennas surrounded with insulating layers with the same thickness but the different dielectric properties.
Figure 5.
Implanted antenna at three different locations inside the human head model.
Table 1.
Dielectric property of three adjacent major tissues at three different locations inside the human head (Fig. 6) at 2.4 GHz.
Figure 6.
Input Impedance of the implanted rectangular antenna at three different locations inside the human head (Figure 5).
Figure 7.
Input Impedance of the antenna when implanted 19-tissue head model, the head shape homogenous phantom model and the rectangular homogenous phantom model.
Figure 8.
Implanted rectangular antenna, a) geometry and b) input impedance.
Figure 9.
Implanted serpentine antenna, a) geometry and b) input impedance.
Figure 10.
Geometry of the implanted dipole antenna.
Table 2.
Maximum power reception under IEEE and ICNIRP SAR limit (2 Watts perKg per 10 gm) at 2 GHz when the implanted antenna is placed right under the dura.