Four-Port Metasurface-Loaded Graphene–Ceramic THz Radiator With Frequency Tunability, Circular Polarization, and Enhanced Far-Field Decorrelation

IF 1.8 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Communication Systems Pub Date : 2026-09-29 DOI:10.1002/dac.70619

Perumalla Krishna Chaitanya, P. Lakshmi Narayana, Neha Shukla, Kiran Sharma, Remya Madhavan U, Rakhi Dua

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Abstract

In this paper, a four-terminal graphene-coated ceramic antenna with a metasurface wall is proposed for tunable terahertz (THz) MIMO communication. The proposed design solves the problems of frequency reconfigurability, circular polarization, high port isolation, and better far-field decorrelation in a compact architecture. The frequency tuning is realized by tuning graphene potential in the range of 0–0.5 eV. The working frequency range can be obtained from 5.30 to 5.95 THz with stable radiation properties. The antenna has circular polarization, mutual coupling less than −25 dB, low ECC < 0.01, and high realized gain across the operating band. Metasurface wall can effectively suppress the surface-wave coupling and enhance the pattern diversity, which is helpful to improve the MIMO working. The projected aerial is capable contender for the upcoming 6G THz radio communication and high-speed data transmission applications owing to compact configuration and excellent diversity characteristics.

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具有频率可调谐、圆极化和增强远场去相关的四端口超表面负载石墨烯陶瓷太赫兹辐射器

提出了一种具有超表面壁的四端石墨烯涂层陶瓷天线，用于可调谐太赫兹（THz） MIMO通信。该设计在紧凑的结构中解决了频率可重构性、圆极化、高端口隔离和较好的远场去相关等问题。频率调谐是通过在0-0.5 eV范围内调谐石墨烯电位来实现的。工作频率范围为5.30 ~ 5.95 THz，辐射特性稳定。该天线具有圆极化，互耦小于- 25 dB，低ECC <； 0.01，整个工作频带实现增益高。超表面壁可以有效地抑制表面波耦合，提高模式分集，有助于提高MIMO的工作效率。由于结构紧凑和出色的分集特性，该天线有望成为即将到来的6G THz无线电通信和高速数据传输应用的有力竞争者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Communication Systems 工程技术-电信学

CiteScore

5.90

自引率

9.50%

发文量

323

审稿时长

7.9 months

期刊介绍： The International Journal of Communication Systems provides a forum for R&D, open to researchers from all types of institutions and organisations worldwide, aimed at the increasingly important area of communication technology. The Journal''s emphasis is particularly on the issues impacting behaviour at the system, service and management levels. Published twelve times a year, it provides coverage of advances that have a significant potential to impact the immense technical and commercial opportunities in the communications sector. The International Journal of Communication Systems strives to select a balance of contributions that promotes technical innovation allied to practical relevance across the range of system types and issues. The Journal addresses both public communication systems (Telecommunication, mobile, Internet, and Cable TV) and private systems (Intranets, enterprise networks, LANs, MANs, WANs). The following key areas and issues are regularly covered: -Transmission/Switching/Distribution technologies (ATM, SDH, TCP/IP, routers, DSL, cable modems, VoD, VoIP, WDM, etc.) -System control, network/service management -Network and Internet protocols and standards -Client-server, distributed and Web-based communication systems -Broadband and multimedia systems and applications, with a focus on increased service variety and interactivity -Trials of advanced systems and services; their implementation and evaluation -Novel concepts and improvements in technique; their theoretical basis and performance analysis using measurement/testing, modelling and simulation -Performance evaluation issues and methods.