Graphene-based terahertz antenna on a photonic band gap substrate: design, analysis, and performance evaluation for optical applications

Chandan Kumar; Sanjeev Kumar Raghuwanshi; Santosh Kumar

doi:10.1117/12.2691198

11 March 2024 Graphene-based terahertz antenna on a photonic band gap substrate: design, analysis, and performance evaluation for optical applications

Chandan Kumar, Sanjeev Kumar Raghuwanshi, Santosh Kumar

Author Affiliations +

Proceedings Volume 12885, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII; 128850X (2024) https://doi.org/10.1117/12.2691198
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Terahertz antennas have garnered significant attention, particularly in the fields of photonics and wireless communication. Graphene, renowned for its exceptional strength and thinness, exhibits remarkable properties when employed as an antenna element for radiation. Its conductivity varies with thickness and can be controlled through biasing voltage. To mitigate surface wave effects, photonic band gap crystals serve as suitable substrates. This study proposes an antenna structure comprising a miniaturized patch fabricated from graphene material on a photonic band gap (PBG) substrate of Arlon, operating in the terahertz frequency range. A comparative analysis of the antenna structure with and without PBG is conducted, and the obtained results are discussed. The proposed antenna demonstrates optimal performance in terms of return loss, gain, and voltage standing wave ratio (VSWR) across multiple frequency bands within the terahertz spectrum. At 1 THz and 1.18 THz, it achieves an effective gain of 4.53 dB and a return loss of 22 dB. Additionally, various electrical properties, such as surface current, current density, and VSWR, are analysed. The simulations are conducted using the High-Frequency Structure Simulator (HFSS). With a compact volume of 500 μm x 500 μm x 200 μm, the proposed antenna structure is suitable for various optical applications, including nano-sensor networks and imaging. Encouraging results are demonstrated at higher optical ranges within the terahertz band.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chandan Kumar, Sanjeev Kumar Raghuwanshi, and Santosh Kumar "Graphene-based terahertz antenna on a photonic band gap substrate: design, analysis, and performance evaluation for optical applications", Proc. SPIE 12885, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII, 128850X (11 March 2024); https://doi.org/10.1117/12.2691198

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available