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ABSTRACT
Wearable antennas have become popular due to the emerging trend of body area networks. Textile antenna is a type of wearable antenna which uses textile material for its substrate or patch. It is used in body worn applications such as healthcare, military, and space communication. Mobility is the main constraint in wearable antennas. Hence circular polarization is necessary for textile antennas which can be achieved by inserting slits in the periphery of the patch. This paper includes the performance analysis of slit loaded textile antennas. Four types of textile antennas: without slits, with truncated corners, V-shaped slits, and square-shaped slits are designed with wash cotton and denim substrate using software HFSS. In this paper, we have compared the designed textile antennas with FR4 substrate antenna. Result shows the superiority of the textile antenna with respect to the circular polarization, gain, and return loss. The gain of the textile antenna measured is very high compared to that of the FR4 antenna. Since the Antennas are mounted on the humans, it is essential to measure the specific absorption rate of the antennas. It is observed that the insertion of slit changes the resonant frequency of the antenna and circular polarization is achieved. The designed antennas give optimum performance in terms of return loss, VSWR, and gain; the antennas were radiating within the prescribed limit of 1.6 W/Kg as per the FCC.
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Notes on contributors
R. Sreemathy
R Sreemathy is working as an associate professor in Pune Institute of Computer Technology, Savitribai Phule Pune University, India. She has her master’s degree in electronics engineering from College of Engineering, Savitribai Phule Pune University and doctoral degree in electronics engineering from Shivaji University, India. Her research areas include signal processing, image processing, and wireless communications. Email: [email protected]
Shahadev Hake
Shahadev Hake received his Bachelor of Engineering degree in electronics and communication engineering from MIT Aurangabad in 2009 and the Master of Engineering degree in electronics and telecommunication (Microwave) in 2011 from Pune University. Since December 2011, he has been working as an assistant professor in the Electronics and Telecommunication Engineering Department, PICT, Pune. His research areas include RF microwave and antenna design.
Shamali Sulakhe
Shamali Sulakhe has pursued her ME in microwave engineering at PICT, Pune in 2017. She has completed B.E.in E&TC from Government College of Engineering and Research, Awasari, Pune in 2014. Her areas of interest are antenna design and performance evaluation of microwave software tools. She is currently working as software developer in Wisdm Labs, Pune. Email: [email protected]
Sumit Behera
Sumit Behera is currently working as an assistant system engineer in TCS. He has completed his ME in microwave engineering from Pune University, India, and graduation from Amravati University. His areas of interest include microwave devices and antenna designing. Email: [email protected]