Original scientific paper

https://doi.org/10.17559/TV-20250410002575

A Compact Triband Antenna with Metamaterial Integration for Efficient Sub 8 GHz Application and Satellite Communication

Rajaganapathi Rajappan ; Department of Electronics and Communication Engineering, Anjalai Ammal Mahalingam Engineering College, Kovilvenni, Tiruvarur, Tamil Nadu, India
Giri G. Hallur ; Symbiosis Institute of Digital and Telecom Management (SIDTM), Symbiosis International (Deemed University), Pune, India
Prasad Jones Christydass Samuel ; School of Electronics Engineering, Vellore Institute of Technology, Chennai Campus, Chennai, Tamil Nadu, India *
Bharathi Venkatachalam ; Department of ECE, Kongunadu College of Engineering and Technology, Thottiam, Trichy, Tamil Nadu, India

* Corresponding author.

Abstract

This paper presents the design of a compact tri-band monopole antenna for wireless applications operating below 8 GHz, employing split-ring resonators (SRRs) to enhance performance. The antenna is realized in two phases, resulting in an offset-fed monopole structure with strategically positioned SRR elements. The antenna operates at three distinct frequencies: 5.34 GHz, 7.64 GHz, and 7.94 GHz, with corresponding operational bandwidths of 5.25-5.40 GHz, 7.43-7.73 GHz, and 7.87-8.15 GHz, offering bandwidths of 150 MHz, 302 MHz, and 280 MHz, respectively. The return losses at these frequencies are –16.66 dB, –15.39 dB, and –18.71 dB. Surface current analysis reveals multiple modal excitations across the three bands, confirming efficient multi-frequency operation. The antenna exhibits a stable gain between 2.5 and 3.8 dBi, indicating sufficient directionality for multi-standard communication systems, such as WLAN, ISM, and satellite uplink. The proposed antenna design successfully balances high performance with structural simplicity and compact dimensions. These characteristics make it suitable for a variety of wireless communication applications, where size and multi-band functionality are critical. The use of SRRs contributes to enhanced bandwidth and performance, while the offset-fed monopole configuration ensures broad compatibility with diverse wireless standards. The design achieves a practical and effective solution for future communication systems requiring compact yet high-performance antenna structures.

Keywords

bandwidth enhancement; monopole antenna; split-ring resonators (SRRs); tri-band antenna; wireless communication

Hrčak ID:

348718

URI

https://hrcak.srce.hr/348718

Publication date:

30.6.2026.

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