Akademik Veri Yönetim Sistemi
AEU - International Journal of Electronics and Communications, cilt.214, 2026 (SCI-Expanded, Scopus)
This study presents a compact all-textile metasurface-integrated wearable antenna (MS-ANT) for the 5.8 GHz ISM band. The metasurface (MS) is realized as a finite 2 × 2 array by rotating a single identical unit cell into four orientations (α = 0°, 90°, 180°, and 270°). The proposed structure occupies a 45 × 45 mm2 footprint with a low-profile configuration. An extensive orientation study is conducted by assigning the rotated unit cells to the four MS positions (M#1-M#4) and examining single, dual, triple, and quadruple combinations. The resulting orientation-dependent coupling is evaluated using |S11| and realized gain over 4–8 GHz. The results indicate that unit-cell rotation provides an effective parameter for controlling impedance matching, with the peak realized gain reaching 7.68 dBi among the evaluated configurations. The fabricated prototype exhibits a measured −10 dB impedance bandwidth of 5.65–6.35 GHz, while simulations predict 5.48–6.22 GHz. Wearable performance is further assessed on the Hugo human voxel model at 5.8 GHz. With a 6 mm antenna-to-skin spacing, the maximum SAR is 0.67 W/kg (10 g) and 1.38 W/kg (1 g) for the arm placement. Overall, the proposed MS-ANT provides a compact, configuration-tunable, and safety-oriented solution for practical 5.8 GHz WBAN/ISM wearable applications.