The chapter explores a racket shaped antenna that operates in triple band frequency configuration. The main advantage of this antenna is that the design uses wearable textile material as a substrate. Here, jeans material is used as a substrate whose dielectric constant is 1.7 and thickness is 1mm. The designing and simulation are done with the help of CST software. The anticipated antenna operates in C-band and X-band providing three resonant frequencies 7.335GHz, 8 GHz, and 8.38 GHz. Different analyses have been done using CST software based on parameters like return loss, radiation pattern, smith chart, polarization, etc. For obtaining the best result, parametric study has also been done by varying the geometry of the design.
Under this article, a jawbreaker-shaped textile antenna is designed for assortment applications like satellite communication, security system, medical, etc. For the antenna to be wearable, jeans substrate is used in place of FR-4 material so that it can easily bend. After simulating in CST software, the resonant frequency is 7.5 GHz under which it covers the range of 5.37 GHz to 8.36 GHz frequency. The simulating result of proposed antenna shows high efficiency, better directivity, and radiation pattern. The overall bandwidth of proposed antenna is 27.07%.
In this chapter, a single element of wearable antenna is designed, and further, to enhance the gain, a wearable rectenna array is designed that can be utilized for the purpose of energy harvesting at 3.14 GHz. The theoretical analysis of received power has been studied. The anticipated antenna array shows the directivity of 8.048 dBi that was used to calculate received power by antenna array at the distance of 10 meters from transmitter. This rectenna array can be used to operate the micro-electronic gadgets and to operate small sensors.
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