1 x 4 Configuration Orthogonal S-Band MIMO Antenna for Breast Cancer Detection

This paper represents a 1 x 4 MIMO Antenna designed orthogonally for biomedical applications basically for Breast Cancer Detection in which a total of four elements are placed at 22.8 mm away from the edges on the front side of the 1.58 mm thick FR-4 substrate. The substrate has a length and width of 69 mm. The MIMO Antenna has four grounds for each of the four elements at the back side. Furthermore, the antenna also includes an Electromagnetic Coupling structure which contributes to the increment in overall gain of the antenna beginning from the lowest gain of 2.4 dBi reaching to the highest peak gain of about 4.23 dBi. This difference between the highest and lowest gain amounts to about 1.83 dBi increase in gain of the antenna. In addition to this, S-Parameters of the Antenna stays below -10 dB by a large amount pointing to -31.78 dB. Also, the proposed Antenna's isolation stays below -15 dB.