@misc{10481/103037,
year = {2025},
url = {https://hdl.handle.net/10481/103037},
abstract = {This work presents an amplitude-reconfigurable unit cell for the design of active 1D metasurfaces at the millimeterwave frequency range. The reconfigurable unit cell consists of contactless air-filled substrate-integrated waveguide (CLAF-SIW) that feeds a SIW cavity with a ring-shaped slot as a radiating element. In order to perform the reconfiguration, two PIN diodes are placed in the ring-shaped slot. The CLAF-SIW allows reduced losses while feeding the reconfigurable SIW cavities in a progressive form as a leaky-wave antenna. The structure requires a single layer for the radiating elements and only two for the feeding layer since the radiation layer completes the CLAF-SIW. For the implementation of beamforming at 40 GHz, a method of switching OFF/ON in each reconfigurable unit cell is applied. By optimizing the state of each unit cell in the reconfigurable leaky-wave antenna, various radiation patterns can be achieved.},
organization = {MCIN/AEI/10.13039/501100011033 TED2021-129938B-I00, PID2020-112545RBC54, PDC2022-133900-I00, PDC2023-145862-I00, FPU20/00256, EST23/00141},
organization = {European Union NextGenerationEU/PRTR},
organization = {ESF Investing in your future},
keywords = {Contactless air-filled SIW (CLAF-SIW)},
keywords = {Dynamic metasurface},
keywords = {Millimeter waves},
keywords = {PIN diode},
keywords = {Reconfigurable pattern},
title = {Amplitude-Reconfigurable Unit Cell in CLAF-SIW for Beamforming Applications at mmWaves},
author = {Segura Gómez, Cleofás and Biedma Pérez, Andrés and Padilla De La Torre, Pablo and Palomares Caballero, Ángel},
}