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http://dx.doi.org/10.7840/kics.2013.38B.9.744

Embodiment of High Impedance Surface of Meta-Material Characteristic Using Symmetrical AMC Structure and Its SAR Analysis  

Lee, Seungwoo (충북대학교 전자정보대학 정보통신공학부)
Lee, Moung-Hee (충북대학교 전자정보대학 정보통신공학부)
Rhee, Seung-Yeop (전남대학교 전기.전자통신.컴퓨터공학부)
Kim, Nam (충북대학교 전자정보대학 정보통신공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38B, no.9, 2013 , pp. 744-750 More about this Journal
Abstract
In this paper, we proposed new type of an artificial magnetic conductor(AMC) structure, which has a high impedance surface for realizing the meta-material characteristics. The designed AMC structure set a goal of 3.2GHz, and the reflector, which consists of periodically arrayed AMCs is fabricated and measured. The high impedance improves the reflection coefficient, decreases the system size and interference, and increases the antenna performance. The structure has embodied the high impedance by the thickness and relative permitivity of the dielectric substrate and the design configuration without the metallic via hole which connects the AMC to the GND. The bandwidth is 150% broader than the similar AMC structures. Also, the distance between the antenna and the AMC reflector is decreased by ${\lambda}/10$ as working as the metal(PEC) reflectors. The antenna radiation characteristics are 3dB increased at 10mm away from reflector by measurement. The proposed reflector could be inserted in the portable mobile devices, and the antenna's performance has improved by the reflector. The specific absorption rate is dramatically decreased over 94% because the back radiation of the antenna is shielded.
Keywords
Artificial Magnetic Conductor; Meta-material; High Impedance Surface; Reflector; Specific Absorption Rate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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