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Contactless AF-SIW Phase Shifters Based on Periodic Structures at mmWaves
  • +2
  • Cleofás Segura-Gómez,
  • Mario Pérez-Escribano,
  • Andrés Biedma-Pérez,
  • Ángel Palomares-Caballero,
  • Pablo Padilla
Cleofás Segura-Gómez
Department of Signal Theory, Centre for Information and Communication Technologies (CITIC-UGR), Telematics and Communications, University of Granada, Calle Periodista Rafael Gómez Montero
Mario Pérez-Escribano
Department of Signal Theory, Centre for Information and Communication Technologies (CITIC-UGR), Telematics and Communications, University of Granada, Calle Periodista Rafael Gómez Montero, Telecommunication Research Institute (TELMA), Universidad de Málaga, E.T.S. Ingeniería de Telecomunicación, Boulevard Louis Pasteur

Corresponding Author:[email protected]

Author Profile
Andrés Biedma-Pérez
Department of Signal Theory, Centre for Information and Communication Technologies (CITIC-UGR), Telematics and Communications, University of Granada, Calle Periodista Rafael Gómez Montero
Ángel Palomares-Caballero
Institut d'Electronique et des Technologies du numéRique (IETR), UMR CNRS 6164, INSA Rennes
Pablo Padilla
Department of Signal Theory, Centre for Information and Communication Technologies (CITIC-UGR), Telematics and Communications, University of Granada, Calle Periodista Rafael Gómez Montero

Abstract

This document presents different phase shifter designs implemented in contactless air-filled substrateintegrated waveguide (CLAF-SIW) technology. The phase shifters are based on unit cells that avoid leakage losses in the assembled layers and produce the desired phase shift along the waveguide. The unit cells are represented by waveguides whose lateral walls have double-mushroom structures, and phase-shifting elements are in their propagation zone. The proposed phase-shifting elements are integrated cavities, integrated cavities with patches, and integrated cavities with mushroomlike patches. Transitions are needed to match impedances between the waveguides loaded with phase-shifting elements and a reference CLAF-SIW. Other transitions are designed to measure the prototypes, from coplanar waveguide to SIW and SIW to CLAF-SIW. Finally, some prototypes 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 shifters in the frequency range between 30 and 50 GHz.
11 May 2024Submitted to TechRxiv
17 May 2024Published in TechRxiv