Technical gazette, Vol. 32 No. 6, 2025.
Original scientific paper
https://doi.org/10.17559/TV-20241231002224
Design and Optimization of a Pentaband Offset Feed Closed Ring Resonator Antenna for Wireless Applications
G. Roja
; Department of Electronics and Communication Engineering, Periyar Centenary Polytechnic College, Vallam, Thanjavur, India
P. Maheswara Venkatesh
; Department of Electronics and Communication Engineering, University college of engineering, BIT Campus, Anna University, Tiruchirapalli, India
*
T. Jayasankar
; Department of Electronics and Communication Engineering, University college of engineering, BIT Campus, Anna University, Tiruchirapalli, India
* Corresponding author.
Abstract
This paper presents a compact Offset Feed Split Ring Resonator (SRR) antenna, fabricated on an FR4 substrate measuring 42.80 × 48.60 × 1.6 mm. Designed for multiband operation, it spans 2.95 GHz to 6.11 GHz, catering to voice communication, WiMAX, 5G, WLAN, and ISM applications. Multiband functionality is achieved through a dual-ring SRR, with parametric analysis optimizing patch and SRR dimensions for enhanced performance. The antenna achieves an 83% efficiency, ensuring effective energy transfer. Specific Absorption Rate (SAR) analysis confirms values below 2 W/kg, meeting safety standards. Simulation and experimental results closely align, validating the design. Its compact size, stable radiation pattern, low SAR, and wideband operation make it a promising candidate for next-generation wireless communication and medical applications, including cancer detection. The simple, efficient design underscores its potential for future wireless and healthcare advancements. The dual-ring structure and parametric optimization enable stable radiation patterns across required frequencies, contributing significantly to antenna technology. Its integration into diverse communication protocols and safety features is vital for medical applications. This design offers a significant advancement in compact, efficient, and safe antenna solutions.
Keywords
FR4 substrate; multiband antenna; offset feed closed ring resonator (SRR); specific absorption rate (SAR); wireless communication
Hrčak ID:
337722
URI
Publication date:
31.10.2025.
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