A Conformal Metamaterial with Wide DNG Region for C and X Microwave Bands

Abstract

In this paper, a novel shaped and conformal, 14.8 mm × 14.8 mm sized unit cell on a flexible substrate, showing DNG phenomena at C (4–8 GHz) and X band (8.8–10.5 GHz, 11.2–11.6 GHz) is designed. The metamaterial offers 6.1 GHz of whole DNG region, transmission coefficient with stopband of 8.6 GHz ranging from 2 to 16 GHz and a broad 10 GHz NRI region from 2 to 12 GHz. The 1 × 2, 2 × 2, and 4 × 4 array formations of designed metamaterial too maintains DNG characteristics. Measured and simulated transmission coefficient curve of the designed unit cell are in good agreement.

KEYWORDS:

• Array structure
• Broad negative refractive index (NRI) region
• Combined metamaterial
• Conformal metamaterial
• C and X band applications
• Double negative (DNG) features

Additional information

Notes on contributors

Deepa Negi

Deepa Negi received BTech (Honors) degree in ECE from Himachal Pradesh University, MTech degree in ECE from Jaypee University of Information Technology, Solan in 2016. Currently, she is pursuing her PhD degree from Thapar Institute of Engineering and Technology, Patiala. Her main research interests include millimeter wave technology, ultra-wide band antennas, band notched antennas, metamaterial structures, wearable and flexible antennas.

Rajesh Khanna

Rajesh Khanna received a BSc (Engg) degree in ECE in 1988 from REC, Kurukshetra and ME degree in 1998 from IISc, Bangalore. He was with Hartron R&D Center till 1993. Until 1999, he was in AIR as assistant station engineer. Presently, he is working as professor in the ECED at Thapar Institute of Engineering and Technology, Patiala. He has published 80 papers in national and international journal/conferences. He has worth Rs 1.5 crore projects to his credit. His main research interest includes antennas, wireless communication and MIMO systems. Email: [email protected]

Jaswinder Kaur

Jaswinder Kaur received her BTech and MTech degrees in ECE from Punjab Technical University, Jalandhar, in 2005 and 2009, respectively. She received her PhD degree from Thapar Institute of Engineering and Technology in 2014. Presently, she is working as an assistant professor in Department of Electronics and Communication Engineering at Thapar Institute of Engineering and Technology, Patiala. She has published 43 papers in various peer-reviewed journals/conferences of national and international repute. Her research interests include the analysis and design of microstrip antennas for wireless communication, UWB antennas, 5G MIMO antennas, CSRRs, metamaterials and antennas for biomedical applications. Email: [email protected]