Implementation of High-Frequency Dielectric Heating System for Breast Cancer Treatment

This paper presents a high-frequency dielectric heating system for breast cancer treatment. The power loss density (W/m 3) was investigated with a curved plate applicator by 3D simulation. The dielectric constant and loss factor of tumor tissue provides 55.25 and 19.8, respectively. This dielectric heating system was implemented based on the high power signal generator 2450 MHz, which is designed by a series resonance circuit with an LC matching element. The dielectric properties of breast phantom and tumor tissue were performing by open-ended coaxial dielectric probe kit connected to a vector network analyzer that can be operated in the range of 1-10 GHz. The impedance matching was measured in breast phantom as a surrogate tumor tissue with an applicator. The heat distribution on tumor tissue was measured using IR cameras. The parameters of microwave DC input power 180 W, efficiency about 30%, and get power at 60 W (47.82 dBm) to generate a stabilized temperature between $39-4 2^{\circ}\mathrm{C}$.