Dual Concentric Conductor Radiator for Microwave Hyperthermia with Improved Field Uniformity to Periphery of Aperture

Paul R. STAUFFER; Marco LEONCINI; Vinicio MANFRINI; Guido Biffi GENTILI; Chris J. DIEDERICH; David BOZZO

Dual Concentric Conductor Radiator for Microwave Hyperthermia with Improved Field Uniformity to Periphery of Aperture

Paul R. STAUFFER, Marco LEONCINI, Vinicio MANFRINI, Guido Biffi GENTILI, Chris J. DIEDERICH, David BOZZO

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Electromagnetic radiation patterns of planar 915MHz Dual Concentric Conductor (DCC) antennas were investigated with theoretical finite difference time domain (FDTD) analyses and experimental measurements of power deposition in a homogeneous lossy dielectric load. Power deposition (SAR) patterns were characterized by scanning an electric field sensor in front of the radiating aperture 1 cm deep in liquid "muscle tissue" phantom. Results showed close agreement between the theoretical simulations and measured SAR patterns for a 3.5cm square aperture. Additional SAR measurements demonstrated the ability to vary aperture size from 3.5-6cm with minimal change in shape of the power deposition pattern. Both analyses indicated that effective power deposition (50% SAR_max) extends to the periphery of the square apertures. These data support the conclusion that the DCC aperture constitutes an improved radiator to be used as the functional building block of larger array applicators which are required for adjustable heating of large superficial tissue regions in the treatment of cancer.

Publication: IEICE TRANSACTIONS on Communications Vol.E78-B No.6 pp.826-835

Publication Date: 1995/06/25

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Type of Manuscript: Special Section PAPER (Special Issue on Medical Applications of Electromagnetic Techniques)

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Paul R. STAUFFER, Marco LEONCINI, Vinicio MANFRINI, Guido Biffi GENTILI, Chris J. DIEDERICH, David BOZZO, "Dual Concentric Conductor Radiator for Microwave Hyperthermia with Improved Field Uniformity to Periphery of Aperture" in IEICE TRANSACTIONS on Communications, vol. E78-B, no. 6, pp. 826-835, June 1995, doi: .
Abstract: Electromagnetic radiation patterns of planar 915MHz Dual Concentric Conductor (DCC) antennas were investigated with theoretical finite difference time domain (FDTD) analyses and experimental measurements of power deposition in a homogeneous lossy dielectric load. Power deposition (SAR) patterns were characterized by scanning an electric field sensor in front of the radiating aperture 1 cm deep in liquid "muscle tissue" phantom. Results showed close agreement between the theoretical simulations and measured SAR patterns for a 3.5cm square aperture. Additional SAR measurements demonstrated the ability to vary aperture size from 3.5-6cm with minimal change in shape of the power deposition pattern. Both analyses indicated that effective power deposition (50% SAR_max) extends to the periphery of the square apertures. These data support the conclusion that the DCC aperture constitutes an improved radiator to be used as the functional building block of larger array applicators which are required for adjustable heating of large superficial tissue regions in the treatment of cancer.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e78-b_6_826/_p

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@ARTICLE{e78-b_6_826,
author={Paul R. STAUFFER, Marco LEONCINI, Vinicio MANFRINI, Guido Biffi GENTILI, Chris J. DIEDERICH, David BOZZO, },
journal={IEICE TRANSACTIONS on Communications},
title={Dual Concentric Conductor Radiator for Microwave Hyperthermia with Improved Field Uniformity to Periphery of Aperture},
year={1995},
volume={E78-B},
number={6},
pages={826-835},
abstract={Electromagnetic radiation patterns of planar 915MHz Dual Concentric Conductor (DCC) antennas were investigated with theoretical finite difference time domain (FDTD) analyses and experimental measurements of power deposition in a homogeneous lossy dielectric load. Power deposition (SAR) patterns were characterized by scanning an electric field sensor in front of the radiating aperture 1 cm deep in liquid "muscle tissue" phantom. Results showed close agreement between the theoretical simulations and measured SAR patterns for a 3.5cm square aperture. Additional SAR measurements demonstrated the ability to vary aperture size from 3.5-6cm with minimal change in shape of the power deposition pattern. Both analyses indicated that effective power deposition (50% SAR_max) extends to the periphery of the square apertures. These data support the conclusion that the DCC aperture constitutes an improved radiator to be used as the functional building block of larger array applicators which are required for adjustable heating of large superficial tissue regions in the treatment of cancer.},
keywords={},
doi={},
ISSN={},
month={June},}

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TY - JOUR
TI - Dual Concentric Conductor Radiator for Microwave Hyperthermia with Improved Field Uniformity to Periphery of Aperture
T2 - IEICE TRANSACTIONS on Communications
SP - 826
EP - 835
AU - Paul R. STAUFFER
AU - Marco LEONCINI
AU - Vinicio MANFRINI
AU - Guido Biffi GENTILI
AU - Chris J. DIEDERICH
AU - David BOZZO
PY - 1995
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E78-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 1995
AB - Electromagnetic radiation patterns of planar 915MHz Dual Concentric Conductor (DCC) antennas were investigated with theoretical finite difference time domain (FDTD) analyses and experimental measurements of power deposition in a homogeneous lossy dielectric load. Power deposition (SAR) patterns were characterized by scanning an electric field sensor in front of the radiating aperture 1 cm deep in liquid "muscle tissue" phantom. Results showed close agreement between the theoretical simulations and measured SAR patterns for a 3.5cm square aperture. Additional SAR measurements demonstrated the ability to vary aperture size from 3.5-6cm with minimal change in shape of the power deposition pattern. Both analyses indicated that effective power deposition (50% SAR_max) extends to the periphery of the square apertures. These data support the conclusion that the DCC aperture constitutes an improved radiator to be used as the functional building block of larger array applicators which are required for adjustable heating of large superficial tissue regions in the treatment of cancer.
ER -