DESIGN AND PERFORMANCE ANALYSIS OF A MULTIBAND METAMATERIAL-INSPIRED WEARABLE ANTENNA USING HEXAGONAL SPLIT-RING RESONATORS
Volume: 15 - Issue: 01 - Date: 01-01-2026
Approved ISSN: 2278-1412
Published Id: IJAECESTU498 | Page No.: 121-127
Author: Manish
Co- Author: Rajesh Kumar Rai,V. Thrimurthulu,,
Abstract:- The aim of this research was to develop a conformal, compact antenna operating at the 61.25 GHz
band specifically for ingestible telemetry operations. The antenna was encapsulated within a biocompatible silicon
capsule, limited to dimensions of 23 mm height by 9 mm diameter, to ensure the comfort of swallowing and
reliability for implantable devices. The technique employed a simple and symmetrical antenna structure to assure
consistent radiation characteristics within the complex environment of the gastrointestinal tract. To effectively
moderate the high Specific Absorption Rate (SAR) and minimize tissue heating, the antenna was powered by 1W
of energy, provided only in short burst modes with long intervals. This power control management plan was
decisive for limiting the thermal effects. The outcomes from the investigation were highly optimistic. The designed
antenna successfully maintained its intended bandwidth and showed predominantly good gain, verifying its
robustness in the ingestible environment. Moreover, the efficiency of the antenna was established to be more than
50%. The study concluded that the antenna shows great potential to radiate effectively after the designed capsule
antenna is swallowed, making it a viable solution for progressive ingestible sensing and communication.
Biocompatibility and safety analysis and encapsulation was the main concern for the implantable design.
Implantable designs are encapsulated in thin layers of biocompatible materials like to prevent direct contact
between the radiating element and body gastrointestinal tract. Rigorous SAR evaluations were conducted using
phantom based human models to ensure compliance with international safety standards (IEEE and ICNIRP).
Furthermore, this research introduces a link budget analysis for biotelemetry communication
Key Words:- Multiband Antenna, Meta material-Inspired Antenna, Wearable Antenna, HSRR, SRR
Area:-Engineering
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