El Atrash M.Abdalla M.A.Elhennawy H.M.Department of Electrical Systems EngineeringOctober University for Modern Sciences and Arts26 July Mehwar Road intersection with Wahat Road6th October CityEgypt; Department of Electronic EngineeringMilitary Technical CollegeEl-Qobba BridgeAl WailiCairoEgypt; Department of Electronics and CommunicationsAin Shams UniversityAbbasseyaCairoEgypt2020-01-092020-01-09201917518725https://doi.org/10.1049/iet-map.2018.5397https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5397ScopusA compact, flexible, coplanar waveguide-fed, U-shaped reflector surrounded asymmetric meander line antenna operating at 2.4.GHz is presented for wrist wearable applications. The antenna is printed on flexible Rogers Ultralam 3850 substrate. Size reduction of 67.7% was attained by employing the meandering methodology, in comparison with the printed straight monopole. The design displays a gain of around 3.dB by incorporating a U-shaped reflector, on the same level as the radiator, which is considered as the main contribution of the proposed design. Bending scenarios were studied proving the antenna robustness against bending. The proposed antenna was bent over a human body model with optimum separation distance, where enhancement of the specific absorption rate (SAR) level has been achieved, compared to the symmetric meander line antenna. The antenna was fabricated and measured where a high agreement was met in terms of simulated and measured return loss and radiation pattern polar plots, as well as, simulated and measured gain. � The Institution of Engineering and Technology.EnglishAntenna reflectorsBiological radiation effectsCoplanar waveguidesElectromagnetic field effectsMicrostrip antennasReflectionWearable antennasAntenna robustnessCoplanar waveguide fedGain enhancementHuman body modelingMeander line antennasSeparation distancesSpecific absorption rateWearable applicationsDirectional patterns (antenna)Articlehttps://doi.org/10.1049/iet-map.2018.5397