Breast cancer detection with a ring-shaped DRA (dielectric resonator antenna)

Abstract

This paper presents simulation results of tumor detection by placing a phantom parallel to square ring-shaped DRA. This is based on the difference between malignant and normal breast tissues electrical properties. For this purpose, a square ring-shaped DRA with plus DGS in ground is designed. This has volumetric dimensions of 60 × 60 × 5.67 mm3. A spherical breast phantom model is designed with varying dielectric properties. The size of phantom is 44 mm with skin layer of 2 mm followed by fatty layer of 40 mm, followed by 6 mm diameter tumor toward the center of the phantom. The designed DRA covers bands of 4.6–5 GHz and 5.6–11.9 GHz and impedance bandwidths of 400 MHz and 6.3 GHz, respectively. The simulation results excited in front of the breast phantom show significant variations in terms of S11 in presence and absence of tumor. This allows the detection of tumor in phantom. The SAR results show average SAR_10 W/Kg, making antenna safe for biomedical applications.