Wearable Antenna Case Study

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I. INTRODUCTION Wearable antennas are made by textile materials. Electrical properties of these textile materials are not readily available. Wearable antennas are designed to work in the complicated body centric environment. Performance of wearable antenna near to human body is different from free space performance. Effects on the antenna near human body are reduction of antenna gain, cross polarization level growth, radiation pattern fragmentation, and decreased antenna efficiency. These effects can be minimized by making good isolation between human body and antenna. Good isolation can be achieved by putting ground plane or by making space between human body and antenna. Biological effect of wearable antennas can be defined in terms of …show more content…

EBG based antenna is also examined under bent as well as crumpling condition. Performance of EBG based antenna and simple CPW antenna is done. Bending and crumpling effect in EBG based antenna is lesser than simple CPW antenna [5]. F. Pekka Salonen , Peter de Maagt.“ Practical Design Aspects for Textile Antennas.” AP-S 2013. Requirements for the materials include the temperature tolerance, durability, physical abrasion, water absorption, stress with the structural characteristics of the fabric to maintain the electrical functionality under the environmental condition. Textile cover can be used to protect antenna in real life system [6]. III. SUMMARY OF LITERATURE REVIEW Different techniques are discussed in this review paper for dealing with different issues of designing wearable antennas. Electrical and dielectric properties of textile materials are not readily available. So, it needs to be calculated first. Detuning effect due to human body can be minimized by putting conductive layer between antenna and human tissue. Bending effect of antenna can be reduced by using EBG structure. Water absorption effect on antenna also can be minimized by choosing appropriate materials. By putting cover to antenna, we can reduce effect of physical abrasion and other environmental

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