Title :
Field analysis of dielectric-loaded lens applicator for microwave hyperthermia
Author :
Alexander, Philip H. ; Liu, Jianfen
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
fDate :
5/1/1993 12:00:00 AM
Abstract :
A dielectric-loaded waveguide applicator for microwave hyperthermia is analyzed. The phase constant in the waveguide is determined from the numerical solution of the characteristic equation. The field pattern in human muscle which is produced by the applicator is determined by using the Kirchhoff-Huygens principle. The field focusing effect is dependent on the properties of the low permittivity dielectric slab centered in the water-filled waveguide. The greatest field enhancement is found to occur when the slab is 75-mm wide for a 150-mm×100 mm waveguide at 430 MHz
Keywords :
biomedical equipment; biothermics; dielectric-loaded waveguides; electromagnetic field theory; focusing; radiation therapy; radiofrequency heating; waveguide components; 430 MHz; 75 to 150 mm; Kirchhoff-Huygens principle; UHF; characteristic equation; dielectric-loaded lens applicator; field focusing effect; field pattern; human muscle; low permittivity dielectric slab; microwave hyperthermia; phase constant; water-filled waveguide; waveguide applicator; Apertures; Applicators; Dielectrics; Electromagnetic heating; Equations; Humans; Hyperthermia; Lenses; Muscles; Slabs;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
