RT Journal Article T1 Contactless AF-SIW phase shifters based on periodic structures at mmWaves A1 Segura-Gómez, Cleofás A1 Pérez-Escribano, Mario A1 Biedma-Pérez, Andrés A1 Palomares-Caballero, Ángel A1 Padilla, Pablo K1 Guías de ondas AB This document presents different phase shifter designs implemented in contactless air-filled substrate-integratedwaveguide (CLAF-SIW) technology. The phase shifters are based on unit cells that avoid leakage losses in theassembled layers and produce the desired phase shift along the waveguide. The unit cells are representedby waveguides whose lateral walls have double-mushroom structures, and phase-shifting elements are intheir propagation zone. The proposed phase-shifting elements are integrated cavities, integrated cavities withpatches, and integrated cavities with mushroom-like patches. Transitions are needed to match impedancesbetween the waveguides loaded with phase-shifting elements and a reference CLAF-SIW. Other transitions aredesigned to measure the prototypes, from coplanar waveguide to SIW and SIW to CLAF-SIW. Finally, someprototypes are manufactured to provide an experimental validation of the proposed phase-shifting elements.Good agreement is obtained between the simulated and measured results for all the CLAF-SIW phase shiftersin the frequency range between 30 and 50 GHz PB Elsevier YR 2024 FD 2024 LK https://hdl.handle.net/10630/31407 UL https://hdl.handle.net/10630/31407 LA eng NO Cleofás Segura-Gómez, Mario Pérez-Escribano, Andrés Biedma-Pérez, Ángel Palomares-Caballero, Pablo Padilla, Contactless AF-SIW phase shifters based on periodic structures at mmWaves, AEU - International Journal of Electronics and Communications, Volume 179, 2024, 155320, ISSN 1434-8411, https://doi.org/10.1016/j.aeue.2024.155320 NO Funding for open access charge: Universidad de Málaga / CBUA DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 21 ene 2026