A compact wideband antenna for microwave hyperthermia system

Paper in proceeding, 2013

Hyperthermia treatment is a medical treatment during which the temperature is raised in tumours for a sufficient period of time, to kill the cancer cells or make them more sensitive to ionizing radiation or chemotherapy. Different type of antennas have been used so far in deep hyperthermia applicators, such as water-filled waveguide antennas, dipole antennas or probe-fed patch antennas. These antennas are either large and heavy (like as the waveguide antennas) or present very narrow bandwidth which are not desired characteristics. In this paper we present a compact, wideband antenna to be used in hyperthermia antenna applicator. This applicator is developed for microwave hyperthermia of deep seated tumours in head and neck. The antenna should be of small size, with wide frequency band and directive radiation pattern. The desired wide bandwidth of 0.4 to 0.9 GHz, is due to multiple frequency approach in our treatment strategy.