Small Antennas for Hyperthermia

The paper is contributed to the special session in memory and honor of Prof. James R. James. Various types of antennas for hyperthermia or thermal therapies have widely been investigated. Since these antennas are used in and around a human body, the size of the antennas must be small. Particularly, for internal heating antennas, thin or small-sized antennas are required in order to realize minimally invasive treatment. The author et al. have been studying the coaxial-slot antenna, which is one of thin microwave internal antennas for hyperthermia. The paper overviews such small antennas and demonstrates a few applications of the antennas to hyperthermia.