Comparison on the effect of homogeneous and inhomogeneous body on antenna performance and SAR

Author

Othman, Norazila ; Samsuri, N.A. ; Rahim, M.K.A. ; Elias, N.A. ; Jalil, M.E.

Author_Institution

Radio Commun. Eng. Dept. (RaCED), Univ. Teknol. Malaysia, Skudai, Malaysia

fYear

2012

fDate

11-13 Dec. 2012

Firstpage

62

Lastpage

64

Abstract

This research quantifies the effect of homogeneous and inhomogeneous body model on Specific Absorption Rate (SAR). Quarter wave monopole antenna is used as the excitation source at 2.4 GHz. The simulation results are calculated by means of CST Microwave Studio based on Finite Integration Technique (FIT). Male Voxel model is modelled as an inhomogeneous and homogeneous models and filled with standard dielectric properties (σ,ε_r) of 2.4 GHz as recommended by the FCC. The antenna is placed in front of the body model in the area of human wrist and the distances are varied (5, 10, 20, 31, 50, and 62 mm). The results are presented in terms of resonant frequency, radiation pattern, and SAR. The effect of homogeneity is negligible on the return loss and radiation pattern. However the 10g SAR is increased by 20% when the homogeneous model is used.

Keywords

antenna radiation patterns; monopole antennas; CST Microwave Studio; antenna performance; distance 10 mm; distance 20 mm; distance 31 mm; distance 5 mm; distance 50 mm; distance 62 mm; finite integration technique; frequency 2.4 GHz; quarter wave monopole antenna; specific absorption rate; Absorption; Antenna radiation patterns; Dielectrics; Nonhomogeneous media; Resonant frequency; Specific absorption rate; antenna performance; component SAR; dielectric properties; monopole antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electromagnetics (APACE), 2012 IEEE Asia-Pacific Conference on

Conference_Location

Melaka

Print_ISBN

978-1-4673-3114-2

Type

conf

DOI

10.1109/APACE.2012.6457632

Filename

6457632