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

Volume

36

Issue

5

fYear

1988

fDate

5/1/1988 12:00:00 AM

Firstpage

908

Lastpage

916

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.3611

Filename

3611