Title :
Comparison of power deposition by in-phase 433 MHz and phase-modulated 915 MHz interstitial antenna array hyperthermia systems
Author :
Trembly, B. Stuart ; Wilson, A.H. ; Havard, John M. ; Sabatakakis, Kyriacos ; Strohbehn, John W.
Author_Institution :
Thayer Sch. of Eng., Dartmouth Coll., Hanover, NH, USA
fDate :
5/1/1988 12:00:00 AM
Abstract :
The interstitial microwave antenna array hyperthermia (IMAAH) system produces a pattern of specific absorption rate (SAR) that is nonuniform within a 2-cm square array when driven in phase at 915 MHz. It was found that phase modulation makes the time-averaged SAR pattern significantly more uniform in planes perpendicular to the antennas. To drive antennas in phase at 433 MHz similarly improves SAR uniformity when the antennas are of resonance length
Keywords :
biothermics; microwave antenna arrays; phase modulation; 433 MHz; 915 MHz; IMAAH; interstitial antenna array hyperthermia systems; phase modulation; power deposition; resonance length; specific absorption rate; time-averaged SAR pattern; Antenna arrays; Biomedical applications of radiation; Dipole antennas; Electromagnetic heating; Hyperthermia; Microwave antenna arrays; Neoplasms; Phase modulation; Phased arrays; Resonance; Specific absorption rate; Temperature;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
