A metasurface-backed planar low-profile dual-band monopole antenna

Abstract

This paper discusses a low-profile, planar, efficient, and directed CPW-fed monopole antenna with a metasurface (MS) for WLAN as well as modern civil and military applications. A stacked 7 × 7 order metasurface (MS) and CPW-fed slotted patch antenna are sandwiched together to create the metasurface antenna (MSA). The overall size of the proposed prototype is 0.25λ₀× 0.25λ₀× 0.06λ₀ only, where λ₀ is the free-space wavelength at 2.34 GHz. This antenna has fractional bandwidths of 6.8% and 53.8% at two different frequencies of 2.34 and 8.94 GHz, respectively. With a peak gain of 8.7 dBi and radiation efficiency of 91.1% at 11.51 GHz, the antenna offers directional radiation characteristics in both the E- and H-planes. A comparable circuit model for the proposed prototype has also been described in order to analyze the outcomes of the electromagnetic simulation. The intended prototype has been fabricated, and the experimentally measured results closely resemble the simulated ones.

KEYWORDS:

• Slotted patch
• CPW-fed
• metasurface
• antenna

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Indian Space Research Organisation: [Grant Number DS_2B-13012(2)/26/2022-Sec.2]; Science and Engineering Research Board: [Grant Number CRG/2021/000947].

Notes on contributors

Diptiranjan Samantaray

Diptiranjan Samantaray received the B.Tech degree in Electronics and Telecommunication engineering from the Biju Patnaik University of Technology, Rourkela, India, in 2009, the M.Tech degree in Electronics and Communication engineering from the Indian Institute of Technology, Kharagpur, India, in 2015, and the Ph.D. degree in microwave engineering from the Indian Institute of Technology, Banaras Hindu University, Varanasi, India, in 2022. His research interests include metamaterial and metasurface based antenna. Dr Samantaray served as the founding treasurer of IEEE Photonics Society Student Branch Chapter along with the chairperson of IEEE MTT-S Student Branch Chapter, IIT (BHU), Varanasi, India.

Somak Bhattacharyya

Somak Bhattacharyya received his B.Tech and M.Tech from University of Calcutta, Kolkata, India in 2006 and 2009 respectively and PhD from Indian Institute of Technology Kanpur, India in 2015. Since 2016 December, he is working as Assistant Professor in the Department of Electronics Engineering at Indian Institute of Technology (Banaras Hindu University), Varanasi, India. He has been elected as the Associate Fellow of West Bengal Academy of Science and Technology as well as Fellow of IETE and Antenna Test and Measurement Society (ATMS), India. Since 2021, he is serving as the coordinator of IEEE Region 10 in the Young Professional Group of MTT Society. He has been inducted in the technical program committee of IEEE MTT Society and the only representative from India to be included in the Speakers Bureau program. Under his guidance, IEEE MTT Society Student Branch Chapter IITBHU Varanasi has received the prestigious Outstanding Chapter Award in 2022. Recently, he has received the innovation award in Microwave field-2021 from IEEE AP-MTT Joint Chapter, Gujrat Section. Very recently, he has been conferred with IETE-Smt. Manorama Rathore Memorial Award 2022 and Outstanding Section Volunteer Award 2022 from IEEE UP Section. He has also been enlisted in the Travelling Lecturer of Optica. His current areas of interest lie in metasurface, periodic structures, optomicrowave devices, microwave photonics etc.