Design of a Miniaturized Slotted T-Shaped Microstrip Patch Antenna to Detect and Localize Brain Tumor

Abstract

This paper presents a miniaturized, single-fed, slotted T-shaped, body worn antenna mainly designed for detecting and locating brain tumor which operates in the frequency band 902-928 MHz of Industrial, Scientific, and Medical (ISM) band. The key prominences of the proposed antenna are its minuscule dimension, vast bandwidth, good parameter results to identify affected and unaffected human brain tissue. The dimension of the proposed antenna is 29.99 mm × 29.99 mm × 0.59 mm, which has been placed over a complete human head phantom model consisting of six different layers; designed in CST Microwave Studio without altering their dielectric properties to carry out the simulation. Several performance measurements have been performed for both normal condition and tumor affected conditions changing the tumor positions with respect to the antenna. Analyzing these data, the location of the tumor can be estimated. A tumor having a radius of 5 mm with conductivity and permittivity of 7 S/m and 55 respectively, has been taken into consideration for the simulation process. The maximum SAR (specific absorption rate) of the proposed model measured 0.332 W/ Kg which satisfies the required safety guidelines.