Abstract Recent advancements in wireless communication technologies and Internet‐enabled devices have accelerated the demand for compact, efficient antennas suitable for body‐centric applications. This study presents a compact, high‐performance dual‐frequency antenna featuring an artificial magnetic conductor (AMC) surface for next‐generation wireless systems. A modified gear‐wheel radiating patch on top and a partial ground plane on the bottom comprise the antenna, making it a three‐layer antenna. A circular patch overlays 12 radiating teeth, enabling a dual wideband response. The AMC surface comprises a 4 × 4 array of unit cells, each incorporating slotted square and rectangular patches. The unit cells exhibit double‐negative (DNG) properties and operate in three frequency regions. The zero‐degree reflection phase occurs at 2.5 GHz, 4.1 GHz, and 6.5 GHz. The integrated antenna covers impedance bandwidths of 71.79% (2.0–4.24 GHz) and 41.67% (5.13–7.83 GHz), encompassing key wireless frequency bands, while maintaining compact dimensions of 0.554 λ 0 × 0.554 λ 0 × 0.135λ 0 at the lowest resonant frequency. A maximal gain of 8.26 dBi, a low Specific Absorption Rate (SAR) of 0.0528 W/kg, and a high FBR of 33.85 dB at 4.1 GHz are key performance characteristics. VSWR values below 2 in both bands indicate exceptional impedance matching. Experimental validation using a Vector Network Analyzer (VNA) and an anechoic chamber confirms the modeling results. The proposed antenna, owing to its low SAR and wideband performance, is suitable for body‐centric wireless systems operating in standard frequency bands such as ISM, Wi‐Fi 6E, and C‐band.
Rajavel et al. (2026) studied this question.