NEAR-FIELD CHARACTERIZATION OF RECONFIGURABLE NARROWBAND ANTENNA IN THE PROXIMITY OF THE HUMAN BODY

Journal Article · Tue Mar 03 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3114157· OSTI ID:21260281

Elshafiey, Ibrahim; Sheta, Abdel-Fattah; Alkanhal, Majeed A; Mohra, Ashraf ^[1]; AlOrainy, Abdullah ^[2]

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1. Prince Sultan Advanced Technologies Research Institute (PSATRI), and Department of Electrical Engineering, King Saud University, P.O. Box 800, Riyadh 11421 (Saudi Arabia)
2. Electronics Research Institute, King Abdulaziz City for Science and Technology, Riyadh (Saudi Arabia)

Reconfigurable antennas have been suggested recently for use in various mobile systems. These systems are usually operated in the vicinity of human body, leading to mutual interaction with body tissues. A nondestructive evaluation method is developed to characterize a reconfigurable antenna designed to cover the GSM-900/DCS-1800 bands. Modeling based on FDTD is performed of the antenna in free space and in proximity to the human head. Results reveal frequency shift, and variations in the matching and bandwidth, depending on antenna orientation with respect to the head. Experimental setup is also used to characterize the SAR values in human head. A six-degree-of-freedom robot is implemented to scan a head phantom using specialized sensors and head simulating liquids. The developed system provides a tool for guiding the design of the new category of reconfigurable antennas.

• OSTI ID: 21260281
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1096; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTENNAS
DEGREES OF FREEDOM
HEAD
LIQUIDS
MAN
NONDESTRUCTIVE ANALYSIS
NONDESTRUCTIVE TESTING
NUMERICAL ANALYSIS
PHANTOMS
ROBOTS
SENSORS
SIMULATION