Ruiz Fernández de Arcaya, MaríaMarzo Pérez, AsierBeruete Díaz, Miguel2023-11-202023-11-202023Ruiz Fernandez De Arcaya, M., Marzo, A., Beruete, M. (2023) Full-space metasurface at millimeter-wave frequencies. En EuCAP, 2023 17th European Conference on Antennas and Propagation (EuCAP) (pp. 1-5). IEEE. https://doi.org/10.23919/EuCAP57121.2023.10133689.978-1-6654-7541-910.23919/EuCAP57121.2023.10133689https://academica-e.unavarra.es/handle/2454/46790Conventional metasurfaces provide control over the electromagnetic waves in a single working frequency operating either in transmission or reflection. Full-Space Metasurfaces (FSM) are an extension that allows operation at two different frequencies with independent functionalities in transmission and reflection. This paper presents a gradient index FSM device based on a 3-layered unit cell where the phase modulation is implemented following the Pancharatman-Berry (PB) principle. The device is designed to operate at millimeter waves, with the lowest frequency operating in reflection and the highest one in transmission. To check the structure performance, a metasurface was designed to provide beam steering in reflection at 49.4 GHz and an amplitude image hologram in transmission at 104 GHz.application/pdfeng© EurAAPBeam steeringCircular polarizationFull-space metasurfaceHologramPancharatman-Berry phaseinfo:eu-repo/semantics/conferenceObject2023-11-20info:eu-repo/semantics/openAccess