By Topic

Heating patterns generated by phase modulation of a hexagonal array of interstitial antennas

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Y. Zhang ; Dept. of Electr. Eng., Duke Univ., Durham, NC, USA ; W. T. Joines ; J. R. Oleson

An array of six interstitial microwave antennas used for hyperthermia cancer treatment is investigated. The purpose is to generate both uniform and controlled nonuniform heating patterns in biological tissue by phase modulating the signals applied to each antenna. The array consists of six antennas positioned on the corners of a hexagon. The distance between two diagonal antennas is 4 cm. The distributions of absorbed power per unit mass within the array are computed and converted into temperature distributions through a thermal conduction simulation. The specific absorption rate and temperature patterns are presented in the lateral plane (perpendicular to the antennas) and the axial plane (parallel with the antennas). By proper phase modulation of microwave signals applied to each antenna, a uniform heating pattern can be produced within the entire array volume. A peripheral heating pattern can also be generated around the array by using the proper phase modulation. The modulation schemes for generating both types of heating patterns are discussed.

Published in:

IEEE Transactions on Biomedical Engineering  (Volume:38 ,  Issue: 1 )