文章基本信息

标题：Graphene as a Shielding Material for SAR Reduction in Human Head using Rectangular and Circular Patch Antenna
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作者：Alka Singla Er ; Anupma Marwaha Dr ; Sanjay Marwaha 等
期刊名称：Karbala International Journal of Modern Science
印刷版ISSN：2405-609X
电子版ISSN：2405-609X
出版年度：2021
卷号：7
期号：2
页码：1-9
语种：English
出版社：Elsevier
摘要：Nanomaterials pave the way for better performance in wireless applications due to their unique properties. Nowadays, these have been used as shield material in dipole antennas for a solution of reduction in SAR value. This work proposes the use of emerging graphene nanomaterial by comparing the performance for two different shapes of patch antenna namely rectangular and circular patch. With the growth in technology, the protection of human health is also mandatory so the work is planned to use graphene as a shielding material for SAR reduction in the human brain and it is proved that for rectangular and circular patch applicators it attains the minimum value of SAR as 0.35 W/Kg and 0.17 W/Kg respectively. Also, antenna parameters using the reconfigurable property of graphene at microwave frequencies are estimated and observed that gain of 8.74 dB and return loss value of -22 dB is achieved for circular patch antenna and gain of 4.28 dB and return loss value of -18 dB is obtained for rectangular patch antenna. The results validate good performance in terms of radiation efficiency and minimum SAR value in comparison to the previously used antennas for shielding purposes.
关键词：Nanomaterial;Shielding material;Graphene;Circular patch antenna