부산대학교 도서관

An array of square antennas is used to detect cancerous tumors in the human brain. The antennais made in such a way as to have dimensions that are just right for practical usage. A polyimide substrate with a permittivity of2.4 and the antenna is made of material with a thickness of1.6 millimeters. Polyimide is used as a substrate due to its low tangent loss, dielectric constant, flexibility, dimensional stability, thermal stability, and high-temperature stability. It reverberates at (2.24GHz-2.43GHz). For the purpose of simulation, a human brain phantom model has been created. The phantom human head is placed with an antenna on top, comprising four homogenous layers with varying electrical properties: brain, fat, bone, and skin. The HFSS software was used tocreate the model mentioned above. The tumor is positioned in several places on the phantom of a human head. Rotating the antenna array while scanning the head will reveal the tumor’s location. Antenna arrays are designed to transmit sufficient energy to pierce through brain tissue. The ability of antenna to change its polarization in the 3 GHz operating band has been confirmed by the measured results. The proposed antenna is reasonable for S-band.