Determination of Bolus Dielectric Constant for Optimum Coupling of Microwaves through Skin for Breast Cancer Imaging

Figure 5

Contours of constant reflection magnitude at levels 30% above the best level determined for pure dielectric with no loss, for frequencies: 0.667, 1.33, 2.0, 3.0, 4.0, 5.0, and 6.0 GHz, as indicated on each curve on the figure. The 30% increased reflection contours have values: 0.17, 0.34, 0.42, 0.435, 0.37, 0.246, and 0.08, respectively. The optimal match dielectric constant for each frequency is indicated by the vertical line from the contour peak to the horizontal axis.