Figures & data
Figure 1. Two-element Yagi-Uda antenna immersed in water, operating at 434 MHz
Figure 2. Four antennas located on each side of the head. Adult male phantom by CST, water bolus, a Cartesian frame and volume τ also shown.
Figure 3. Bolus cross section.
Table 1. εr and σe for head/neck tissues and distilled water.
Figure 4. Antenna labelling.
Figure 5. Volume (ml) for which Pk < P vs. P where Pk is maximal absolute power to voxel Tk. PN = 1W nominal power. Thresholds Pl and Ph are also shown. Incoherent heating (dotted line), LAO of ηΩ and ηH (black and grey solid lines, respectively), and SAO (dashed line).
Figure 6. in μW, on the sagittal plane x = 55δ (left) and on the transversal plane z = 25δ (right), as result of LAO of ηΩ. PN = 1W. Axis unit is δ = 2 mm.
Table 2. Sphere optimisation parameters (best result per row in bold).
Table 3. Powers (in W) resulting from central sphere optimisation and PN = 1W.
Table 4. Results of thinning for central sphere and LA of ηH & SA optimizations.
Table 5. Heating efficiency (mW/W) for different rules for array thinning.