Title :
`Thermic end-fire´ interstitial applicator for microwave hyperthermia
Author :
Cerri, Graziano ; Leo, Roberto De ; Primiani, Valter Mariani
Author_Institution :
Dipartimento di Elettronica e Autom., Ancona Univ., Italy
Abstract :
The analysis of a thermic end-fire interstitial applicator for microwave hyperthermai, i.e. an applicator that performs a tip-localized heating of the surrounding lossy medium, is presented. The antenna consists of a shorted coaxial cable with an annular radiating aperture at the end. the analytical approach is based on the equivalence principle, which leads to an integral equation for the equivalent magnetic current distribution on the aperture; solution is achieved by the method of moments. All theoretical results are compared to experimental ones, showing a good agreement in a wide frequency range
Keywords :
biomedical equipment; biothermics; current distribution; electric admittance; integral equations; microwave devices; radiation therapy; radiofrequency heating; temperature distribution; admittance; annular radiating aperture; equivalence principle; equivalent magnetic current distribution; integral equation; interstitial applicator; microwave hyperthermia; moments method; shorted coaxial cable; thermic end-fire; tip-localized heating; Aperture antennas; Applicators; Coaxial cables; Current distribution; Electromagnetic heating; Hyperthermia; Integral equations; Magnetic analysis; Moment methods; Performance analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
