Optimization-driven design of a 90° metasurface phase shifter at 60 GHz Vassos, Evangelos Zaharis, Zaharias D. Lazaridis, Pavlos Yioultsis, Traianos V Kantartzis, Nikolaos Zapata Cano, Pablo H. Image quality Phase shifters Metasurfaces Metasurfaces Electromagnetics Optimization Wideband The exigent demands imposed by future generations of high-speed cellular and satellite communications claim for low-loss and wideband phase shifters at mm-Wave frequencies. Pixelated metasurfaces provide large design versatility and constitute an attractive solution for wave manipulation. However, their design often implies the simultaneous tuning of a large number of geometrical parameters. In this article, multi-objective optimization is used together with full-wave simulation to design a low-loss 90° phase shifter operating on the 57–63 GHz frequency band. Among the set of optimal individuals provided by the algorithm, a final solution has been selected according to the electromagnetic response of the device, achieving less than 0.06 dB of reflection loss and a constant phase shift with an absolute error less than 2° over the whole frequency band. 2025-01-31T10:46:01Z 2025-01-31T10:46:01Z 2022-08-24 conference output https://hdl.handle.net/10481/101606 10.1109/BlackSeaCom54372.2022.9858206 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Attribution-NonCommercial-NoDerivatives 4.0 Internacional