Antenna Modeling and Reconstruction Accuracy of Time Domain-Based Image Reconstruction in Microwave Tomography

Figure 2

Reconstructed images of the sunflower oil target using monopole lengths 16, 18, 20, 22, and 24 mm, respectively. Both permittivity and conductivity images are shown, and in (a) and (g) the original dielectric distribution has been illustrated. The original target had 𝜖_𝑟=2.7 and 𝜎=0.015  S/m at 2.3 GHz and had diameter 56 mm.

(a) Original permittivity

(b) Permittivity, 16 mm, 𝛿=0.19

(c) Permittivity, 18 mm, 𝛿=0.15

(d) Permittivity, 20 mm, 𝛿=0.18

(e) Permittivity, 22 mm, 𝛿=0.23

(f) Permittivity, 24 mm, 𝛿=0.29

(g) Original conductivity

(h) Conductivity, 16 mm, 𝛿=3.8

(i) Conductivity, 18 mm, 𝛿=1.0

(j) Conductivity, 20 mm, 𝛿=1.0

(k) Conductivity, 22 mm, 𝛿=1.5

(l) Conductivity, 24 mm, 𝛿 = 3.3