Ahmad, SaroshParacha, Kashif NisarSheikh, Yawar AliGhaffar, AdnanButt, Arslan DawoodAlibakhshikenari, MohammadSoh, Ping JackKhan, SalahuddinFalcone, Francisco2021-12-102021-12-102021-11-23Ahmad, S., Paracha, K. N., Sheikh, Y. A., Ghaffar, A., Butt, A. D., Alibakhshikenari, M., Soh, P. J., Khan, S. & Falcone, F. (2021). A Metasurface-Based Single-Layered Compact AMC-Backed Dual-Band Antenna for Off-Body IoT Devices. IEEE Access, 9, 159598–159615.2169-3536https://hdl.handle.net/10016/33738In this article, a compact printed monopole dual-band antenna using artificial magnetic conductor (AMC)-plane with improved gain and broader bandwidth, applicable for off-body internet of things (IoT) devices is presented. The monopole antenna consists of two C-shaped resonators connected through a U-shaped monopole, parasitic elements, discrete ground circular rings and a co-planar waveguide (CPW) feedline. Each artificial magnetic conductor (AMC) unit cell consists of a slotted circular and a square stubs, designed with two zero-crossing phases for improving the radiation characteristics and to achieve the high gain. The overall size of the proposed AMC-backed antenna is 44.4 mm ×44.4 mm ×1.6 mm with electrical dimensions of 0.75lambdag×0.75lambdag×0.027lambdag . This AMC-backed antenna featured measured bandwidths of 9.6% and 12.4% with improved measured gain values of 4.88 dB and 4.73 dB at 2.45 GHz and 5.8 GHz, respectively. The specific absorption rate (SAR) values are analysed and found to be 1.58 W/kg at 2.45 GHz and 0.9 W/kg at 5.8 GHz. Therefore, the proposed AMC-backed antenna is useful for off-body IoT devices operating at 2.45 and 5.8 GHz industrial, scientific, and medical (ISM) band applications.18eng© The authors, 2021. This work is licensed under a Creative Commons Attribution 4.0 License.Atribución 3.0 EspañaAntennasMetasurfacesArtificial magnetic conductorsWireless body area networkSpecific absorption rateInternet of thingsresearch articleTelecomunicacioneshttps://doi.org/10.1109/ACCESS.2021.3130425open access159598159615IEEE Access9AR/0000028941