Tumor Detection by Rectangular Microstrip Patch Antenna

This paper presents an inset feed microstrip patch antenna for biomedical application. The performance of the antenna is enhanced by optimizing the feed line width and length of the radiating patch. The antenna's operational frequency is 2.43 GHz in the Industrial, Scientific, and Medical (ISM) band. The antenna has a dimension of 58.78 × 51 × 1.67 mm
³
. Antenna performance is based on return loss (dB), Specific Absorption Rate (SAR), Voltage Standing Wave ratio (VSWR), gain, directivity, and radiation pattern. The antenna showed outstanding return loss around -62.2 dB at 2.43 GHz frequency. A three-layer human phantom is integrated with the antenna. The location and size of the tumor are obtained by observing the return loss variation of the antenna. The reflection parameter without tumor is -26.18 dB on the other hand with tumor is -20.9 dB that indicates power loss occurs between the range of 0.25% to 0.81%. The Specific Absorption Rate (SAR) of this antenna is 0.438 W/Kg which is safe for the human body. Computer Simulation Technology (CST) was used to depict and simulate the antenna.