Redesign of 434 MHz Cavity Backed Patch Antenna for Hyperthermia Treatment of Cancer

Studies have shown that increasing tumor temperature in the range of 40-44 °C for a duration of 60 minutes (hyperthermia treatment) increases the efficacy of chemotherapy and radiotherapy. In this work, we redesigned a water-loaded cavity-backed C-type patch antenna operating at 434 MHz Industrial, scientific and medical (ISM) band for use as a near field radiating element in a phased array applicator for targeted heating of deep-seated breast tumors. The redesigned antenna has more than 90% power coupling, -10 dB bandwidth of 16.10 MHz and antenna measurements in muscle tissue mimicking phantom are in good agreement with required design parameters.