Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS1
Session:
Number:POS1-52
Analysis of Mushroom-like EBG Structure and UC-EBG for SAR Reduction
Nurul Hafizah Mohd Hanafi,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
This paper presents an analysis and a comparison of two types of Electromagnetic Band Gap (EBG) structures: mushroom-like EBG and uni-planar compact EBG (UC-EBG) to reduce the unwanted electromagnetic waves radiated from mobile phone. In this research, the surface-wave suppression band gap characteristics of these EBG structures and the Specific Absorption Rate (SAR) value in human head tissues have been investigated and analyzed. All the analyses are performed using CST Microwave Studio (CST MWS) software that based on Finite Integration Technique (FIT) method at the GSM 1800 frequency band. The results reveal that the highest percentage of SAR reduction effectiveness was obtained using mushroom-like EBG followed by UC-EBG. The results also conclude that the number of EBG elements is the most important factor for achieving a high value of SAR reduction effectiveness.