Paper Info
Title
Biological Tissue-Equivalent Agar-Based Solid Phantoms And Sar Estimation Using The Thermographic Method In The Range Of 3-6 Ghz
Abstract
In this paper, the electrical constants of a biological tissue-equivalent agar-based solid phantom from 3.0 to 6.0 GHz are described. The developed phantom can reproduce the electrical constants of biological tissues from 3.0 to 6.0 GHz, and it is not necessary to change the phantom for each frequency band in the range of 3.0 to 6.0 GHz during the measurements. Moreover, adjustments to the dielectric constants of the phantom at 3.0, 3.8, 5.2, and 5.8 GHz are presented. The constants of this phantom can be adjusted mainly by using polyethylene powder and sodium chloride. The phantom can be used to evaluate the Specific Absorption Rate (SAR) as well as the antenna characteristics in the range of 3.0 to 6.0 GHz. Furthermore, the effect of the electrical constants of the phantom on the SAR is investigated. The investigation of SAR measurements is per-formed on the phantom at 5.2 GHz using the thermographic method. Calculations using the FD-TD method and the finite difference method based on the heat conduction equation are carried out in order to evaluate the thermal diffusion in the measurements using the thermographic method. The measured and calculated results are in good agreement. There is evidence that the thermal diffusion influences the SAR estimation at 5.2 GHz more than in a lower frequency range even though this method basically does not depend on the frequency.
Year
DOI
Venue
2005
10.1093/ietcom/e88-b.9.3733
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
Field
DocType
solid phantom, broadband, FDTD method, SAR, thermographic method, heat conduction equation
Specific absorption rate,Thermography,Dielectric,Frequency band,Computer science,Imaging phantom,Optics,Finite difference method,Thermal conduction,Thermal diffusivity,Distributed computing
Journal
Volume
Issue
ISSN
E88B
9
0916-8516
Citations 
PageRank 
References 
2
0.72
1
Authors
7
Name
Order
Citations
PageRank
Teruo Onishi186.66
Ryo Ishido220.72
Takuya Takimoto321.40
Kazuyuki Saito42712.50
Shinji Uebayashi563.29
Masaharu Takahashi64417.81
Koichi Ito722.07