Impact of Fidelity Factor on Breast Cancer Detection

Two compact ultrawideband antennas with different values of fidelity factors are introduced in this letter to study the impact of the fidelity factor on the tumor detection of microwave imaging systems. The design procedures are based on achieving the largest possible bandwidth. Antenna 1 (Ant. 1) and Antenna 2 (Ant. 2) have an overall size of 20 × 28 mm
²
and 16 × 22 mm
²
, respectively. Two arrays of the proposed antenna are utilized for breast cancer detection. Two 12-element arrays of the antennas are located around a breast tissue model in two scenarios. The results show the promising performance of Ant. 2, which has a higher fidelity factor in detecting a 4 mm tumor. The investigation was also carried out on a clinical tumor model, and Ant. 2 successfully detected it.