A CPW Fed Circular SRR Inspired Flexible Antenna using Polydimethylsiloxane (PDMS) Substrate for WLAN and WBAN Applications


This article presents a 50×40 mm 2 coplanar waveguide (CPW)-fed triple-band flexible antenna operating at 5, 5.8, and 6.6 GHz for wireless local area network (WLAN) and wireless body area network (WBAN) applications. In the proposed design, polydimethylsiloxane (PDMS) is used as a substrate with a dielectric constant εr of 2.65 and a loss tangent tan δεr of 0.02. In addition to the rectangular slot on the ground, the presented antenna has a single circular split-ring resonator (SRR) structure on the same side of the patch. This provides the required frequency notched characteristics for the targeted frequency bands, compactness, minimize losses, and backward radiation when used in close proximity to the human body. The proposed flexible antenna provides stable results in terms of performance parameters and specific absorption rate (SAR). We have also investigated the antenna under different operating conditions of moisture and bending. There exists a strong correlation between the simulation and measured findings.
Date of Publication: February 22, 2022
Electronic ISSN: 2768-167X
Publisher: IEEE
Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, India
Praveen Kumar Sharma (Member, IEEE) received the B.E. degree (Hons.) in electronics and communication engineering from the University of Rajasthan, Jaipur, India, in 2008, and the M.E. degree in electronics and communication engineering from the National Institute of Technical Teachers Training and Research (NITTTR), Chandigarh, India, in 2015.
He is currently working as a Research Scholar with the Birla Institute of Technology and Science at Pilani (BITS Pilani), Pilani, India. His research interests include antennas, material science, microwaves, and electromagnetics.
Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, India
Navneet Gupta (Senior Member, IEEE) is currently working as a Professor with the Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science at Pilani, Pilani, Rajasthan, India. He has published more than 70 research articles in international journals of high repute. He has also presented more than 65 papers in various conferences in India and abroad. Six Ph.D. students have graduated working under his supervision. He is also an expert reviewer of many reputed international journal publishers, including IEEE, Springer, Elsevier, and Institution of Engineers (India) (IEI). His research interests include modeling of micro/nanoelectronic devices, flexible and wearable electronics, and computational material science and electromagnetics.
Prof. Gupta is also a Life Member of renowned professional bodies, such as the Semiconductor Society of India, the Material Research Society of India (MRSI), and the Optical Society of India (OSI) and a fellow of IEI.
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