@misc{10481/111107, year = {2025}, month = {5}, url = {https://hdl.handle.net/10481/111107}, abstract = {A prephased 1-bit mechanically reconfigurable unit cell for a reconfigurable intelligent surfaces (RIS) is presented. In the proposed RIS unit cell design, a geometric translation of the element has been implemented, obtaining two different pairs of RIS unit cell each with a 1-bit mechanical reconfiguration. The electromagnetic (EM) behavior is analyzed using the reflection coefficient for normal and oblique incidence, demonstrating its suitable operation in the n258 band of 5G. A 10 × 10 mechanically RIS is designed using the two pairs of unit cells and its radiation performance is compared to a conventional 1-bit RIS at 26 GHz. It is shown how a 1-bit configuration with pseudo-randomization for mechanically RIS enhances the radiation pattern performance while maintaining the simplicity of 1-bit reconfiguration.}, organization = {- Department of Signal Theory, Telematics and Communications, Centre for Information and Communication Technologies (CITIC-UGR), University of Granada, 18071 Granada, Spain. - Institut d’Electronique et des Technologies du numéRique (IETR), UMR CNRS 6164, INSA Rennes, France.}, publisher = {European Conference Antennas and Propagation (EurAAP)}, keywords = {Mechanical reconfiguration}, keywords = {millimeter-wave frequencies}, keywords = {reconfigurable intelligent surface (RIS)}, keywords = {unit cell}, title = {Design of a Mechanically RIS Unit Cell with Prephased States at 26 GHz}, doi = {10.23919/EuCAP63536.2025.10999514}, author = {Baena-Molina, Marcos and Palomares-Caballero, Ángel and Padilla, Pablo and Valenzuela-Valdés, Juan F.}, }