Phased Array Antenna Design for Hyperthermia Purpose

Abstract

This paper describes the approach of focusing microwave energy inside a biological tissue for the cancer treatment. The main goal is to achieve the required temperature on the tumor tissue without destroying the healthy tissue as a result of the heating. The proposed method for focusing the electromagnetic energy is based on the reciprocity theorem, in order to define the proper excitations currents ensuring the required focused power at the tumor area. The different aspects of the design are considered and validated using the electromagnetic simulation tools. The proposed model is tested for various geometric structures and for a realistic human body model. Thermal simulations to capture the RF losses is necessary making sure the tissue is not damaged, to resolve the heating of the tissue a gel flued is attached around the ligament that acts as thermal cooler and a RF impedance matching impedance, these different cases are also included. The results show promising future for this type of cancer treatment.