New Antenna Design for Hyperthermia Treatment of Human Head

A study is presented to implement new ultra wideband Vivaldi antenna for hyperthermia treatment of human head. The proposed antenna has overall size 82×92×1.6mm. The new antenna design is compared with original Vivaldi antenna structure, and the results are presented, showing that the new antenna performs better in terms of the return loss parameter, while enhancing the distribution of the specific absorption rate SAR inside the head. The performance of the original and new antenna design is tested corresponding to four background materials: air, oil, water and brain simulating liquid. Results illustrate the potential of this structure for hyperthermia-treatment applicator design.