Monopole Antenna with Frequency Selective Surface for Microwave Breast Cancer Detection

This work introduces a monopole antenna based on metamaterials for breast cancer identification. The put forward antenna is built on an FR4 substrate with a dielectric constant of 4.4, loss tangent 0.025 and thickness of 1.6 mm. For gain enhancement, the designed antenna is equipped with a frequency selective surface (FSS) on its back side. The suggested antenna obtains a broad bandwidth (S
11
> 10 dB) between 2.3 and 22.3 GHz, with a apex gain of 9.3 dBi at 12 GHz. The put forward work also achieves a maximum gain enhancement of 5 dBi with the addition of FSS at the back side of the antenna. The Specific absorption Rate (SAR) study of the antenna with a realistic homogeneous breast phantom modelled in the simulator is performed to assess the effect of radiation on the breast. It is observed that the suggested antenna agrees with the International limits when averaged over 1g of tissue.