RT Journal Article T1 A comprehensive survey on 'circular polarized antennas' for existing and emerging wireless communication technologies A1 Nadeem, Iram A1 Alibakhshikenari, Mohammad A1 Babaeian, Fatemeh A1 Althuwayb, Ayman A. A1 Virdee, Bal S. A1 Azpilicueta, Leyre A1 Khan, Salahuddin A1 Huynen, Isabelle A1 Falcone, Francisco A1 Denidni, Tayeb A. A1 Limiti, Ernesto AB Circular polarized (CP) antennas are well suited for long-distance transmission attainment. In order to be adaptable for beyond 5G communication, a detailed and systematic investigation of their important conventional features is required for expected enhancements. The existing designs employing millimeter wave, microwave, and ultra-wideband (UWB) frequencies form the elementary platform for future studies. The 3.4–3.8 GHz frequency band has been identified as a worthy candidate for 5G communications because of spectrum availability. This band comes under UWB frequencies (3.1–10.6 GHz). In this survey, a review of CP antennas in the selected areas to improve the understanding of early-stage researchers specially experienced antenna designers has presented for the first time as best of our knowledge. Design implementations involving size, axial ratio, efficiency, and gain improvements are covered in detail. Besides that, various design approaches to realize CP antennas including (a) printed CP antennas based on parasitic or slotted elements, (b) dielectric resonator CP antennas, (c) reconfigurable CP antennas, (d) substrate integrated waveguide CP antennas, (e) fractal CP antennas, (f) hybrid techniques CP antennas, and (g) 3D printing CP antennas with single and multiple feeding structures have investigated and analyzed. The aim of this work is to provide necessary guidance for the selection of CP antenna geometries in terms of the required dimensions, available bandwidth, gain, and useful materials for the integration and realization in future communication systems. PB IOP Publishing SN 0022-3727 YR 2022 FD 2022-01-20 LK https://hdl.handle.net/10016/33538 UL https://hdl.handle.net/10016/33538 LA eng NO This project has received funding from Universidad Carlos III de Madrid and the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant 801538. Also, this work was partially supported by RTI2018-095499-B-C31, Funded by Ministerio de Ciencia,Innovación y Universidades, Gobierno de España (MCIU/AEI/FEDER,UE). DS e-Archivo RD 1 sept. 2024