Design and Analysis of a 2.4 GHz Antenna using Metamaterial Ground Planes for Body Worn Wireless Applications

Usman Ali ； Sadiq Ullah ； Haroon

《Bahria University Journal of Information & Communication Technologies》 9卷1期 (2016/06) Pp. 43-48

摘要

In this paper a 2.4 GHz wearable patch antenna is designed on different types of Metamaterial based artificial ground planes. Wearable substrate (butyl rubber) is used in the design of the ground planes which are characterized in terms of surface wave suppression. The slotted Electromagnetic Bandgap (EBG) ground possesses surface wave Bandgap centered at the 2.4 GHz. The EBG-based antenna performance is compared with traditional patch antenna on the breast and muscles of human body. As a proof of concept flat section of human body is considered for the analysis of the antenna. The proposed antenna gives a 2.1 dB enhancement in gain, 8.5 dB and 6.0 dB reduction in back and side lobe levels respectively at 2.4 GHz. The 2.4 GHz band is unlicensed ISM (Industrial Scientific and Medical) band which is used in a variety of applications such as Wi-Fi, Body Area Networks (BANs) and medical diagnostics. The antenna and the EBG surfaces are analyzed using the Finite Integration Technique (FIT) employed in CST-MWS. The proposed antenna is compact, low-profile and light weight, therefore can be used for portable wearable applications.

關鍵字

Electromagnetic Bandgap ； surface wave suppression ； wearable antenna