Implantable Antenna Design Based on Gosper Curve Fractal Geometry

Abstract

A Gosper curve fractal-based geometry novel Planar Inverted F-antenna (PIFA) antenna has been proposed for implantable biotelemetry applications. The antenna is designed to work inside the human muscle tissue at the MICS band (402–405 MHz). The antenna is composed of two layers of radiating patch stacked together on Rogers RO 3010 substrate with a thickness of 10 mil and a radius of 5 mm. The volumetric size of the proposed antenna is approximately 60 mm³. The initial antenna is designed inside the single layer human muscle tissue and optimized inside the multilayer tissue model. Furthermore, lumped equivalent circuit models, based on Bessel filter function, have been proposed and their results are analogized with the proposed antenna design with an error of 2.1%. The performance of fabricated antenna prototype inside human muscle, mimicking liquid phantom, is matched to a large extent closely to the proposed numerical antenna model that ensures its reliability.

KEYWORDS:

• Biomedical devices
• Gosper curve fractal
• Implantable antenna
• Muscle tissue phantom
• PIFA

Acknowledgements

This work was supported by the R & D Infrastructure Division, Department of Science and Technology, Government of India vide Order No. FST/ET-1/2018/157 (C) dated 14/03/2019.

Additional information

Funding

This work was supported by the Department of Science and Technology, New Delhi [grant number Order No. FST/ET-1/2018/157 (C)].

Notes on contributors

Rajeev Kumar

Rajeev Kumar received the BE degree in electronics and communication engineering from the University of Rajasthan, Jaipur, India, in 2008 and MTech in electronics and communication engineering from Sant Longowal Institute of Engineering and Technology (SLIET), Longowal, Punjab, India in 2013. He has been with GIT, Jaipur, India as assistant professor for seven years. Currently, he is pursuing his PhD degree from SLIET, Longowal, Punjab. His current research interests include antenna design and techniques, RF and microwave detection, Implantable antennas for biomedical applications. Email: [email protected]

Surinder Singh

Surinder Singh (M’17) was born in Hoshiarpur, Punjab, India, in 1975. He received his BTech degree from Dr B R Ambedkar Regional Engineering College, Jalandhar, in 1997, the MTech degree from Guru Nanak Dev Engineering College, Ludhiana, in 2003, and the Ph.D. degree from Thapar University, Patiala, India in 2007. Currently, he is working as a professor in Sant Longowal Institute of Engineering and Technology since 2013. His field of interest is optical fibee communication and networks, antenna, and optical sensor design. He has around 145 research papers out of which 75 are in SCI international journals with Thomson Reuter impact factor and 77 are in international and national conferences. He is also handling various research projects and is reviewer of many international journals and conferences.

Ajay Pal Singh Chauhan

Ajay Pal Singh Chauhan received the engineering degree from Gulbarga University, Karnataka, India in 1994 and MTech degree from Punjab Technical University, Punjab, India in 2004, in electronics and communication engineering. He received the PhD degree from Sant Longowal Institute of Engineering and Technology (SLIET), Longowal, Punjab in 2015. Dr Singh is credited with a professional experience of more than 24 years and currently he is professor in the Department of Electronics and Communication Engineering at SLIET, Longowal, Punjab, India. He has presented and published several papers in national /international conferences and reputed journals. His research interest includes RF and microwave sensing of materials, pattern reorganization, deep learning and computer vision. Email: [email protected]