NDLI: Influence of human head and hand on PIFA antenna matching properties and SAR

Content Provider	IEEE Xplore Digital Library
Author	Sarolic, A. Senic, D. Zivkovic, Z. Zorica, A.
Copyright Year	2011
Description	Author affiliation: University of Split, FESB - Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Ruđera Boškovića 32, 21000 Split (Sarolic, A.; Senic, D.; Zivkovic, Z.; Zorica, A.)
Abstract	The paper analyzes the influence of human head and hand on planar inverted F antenna (PIFA) matching properties. Since PIFA is a very popular design in mobile applications, it is of primary importance to analyze the matching of such an antenna in real application scenarios (close to the head, grasped by the hand). Any matching deviation leads to the reduction of radiated power which should be accounted for in the system design. SAR in user's head was also calculated for the standalone antenna and the antenna grasped by user's hand. The analysis was done for a linearly tapered PIFA antenna in the 900 MHz frequency range. Such antenna was simulated and realized. Its gain, radiation pattern, SWR and S11 were simulated and measured for free-space conditions. The antenna matching parameters (S11 and SWR) were then simulated and measured for three different realistic scenarios. Difference in SAR in human head was calculated for the cases of stand-alone and hand-grasped antenna. Simulations were done using SEMCAD X, which provided the anatomically realistic model of human hand and the model of SAM head phantom. Both the simulated and measured results showed that the human hand and head considerably affect the antenna matching parameters, resulting in both matching and SAR variations.
Starting Page	1
Ending Page	5
File Size	584681
Page Count	5
File Format	PDF
ISBN	9781457714399
e-ISBN	9789532900262
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-15
Publisher Place	Croatia
Access Restriction	Subscribed
Rights Holder	University of Split
Subject Keyword	Antenna measurements Helical antennas Horn antennas Humans Mobile antennas Antenna radiation patterns
Content Type	Text
Resource Type	Article

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