Abstract
In this manuscript, an antenna on textile (jeans) substrate is presented for the WLAN, C band and X/Ku band. This is a wearable textile antenna, which was formed on jeans fabric substrate to reduce surface-wave losses. The proposed antenna design consists of a patch and a defected ground. To energize the wearable textile antenna, a microstrip line feed technique is used in the design. The impedance band width of 23.37% (3.4–4.3 GHz), 56.48% (4.7–8.4 GHz) and 31.14% (10.3–14.1 GHz) frequency bands are observed, respectively. The axial ratio bandwidth (ARBW) of 10.10% (4.7–5.2 GHz), 4.95% (5.9–6.2 GHz) and 10.44% (11.8–13.1 GHz) frequency bands are observed, respectively. A peak gain of 4.85 dBi is analyzed at 4.1-GHz frequency during the measurement. The SAR value was calculated to observe the radiation effect and it was found that its utmost SAR value is 1.8418 W/kg and 1.919 W/kg at 5.2/5.5-GHz frequencies, which is less than 2 W/kg of 10 gm tissue. The parametric study is performed for the validation of the proper functioning of the antenna.
Highlights
Flexible and wearable antennas that are lightweight, bendable, portable and reconfigurable are developing very fast in the present era
Wearable textile antennas play a noteworthy function in the body-area network (BAN) as a key component of the wearable devices [5,6,7]
The results provided by the authors [18,19,20,21], the proposed antenna differentiate itself in terms of axial ratio bandwidth (ARBW), safer specific absorption rate (SAR) limit and better gain, respectively
Summary
Flexible and wearable antennas that are lightweight, bendable, portable and reconfigurable are developing very fast in the present era. In [18] a circular-shaped slotted textile-based antenna with partial ground structure is presented, which have an impedance bandwidth of about 46% and 41%, respectively. The authors in [19] presented a felt-textile-based wearable antenna for dual band operation at 2.4/5.2 GHz for WLAN application, which have maximum gain of 1.8 dBi/3.2 dBi. In [20] two different textile-based substrate (polyester and Jeans cotton) have presented for wearable antenna, the antenna offers frequency range from. The antenna is showing triple band operation with an acceptably low value of SAR, which is desirable for the human body. In addition to, this antenna shows a circular polarization which enhances the capability of antenna and reduce the losses.
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