Mechanically reconfigurable linear phased array antenna based on single-block waveguide reflective phase shifters with tuning screws
EntityUAM. Departamento de Tecnología Electrónica y de las Comunicaciones
PublisherInstitute of Electrical and Electronics Engineers
10.1109/ACCESS.2020.3003193IEEE Access 8 (2020): 113487
Funded byThis work was supported by the Spanish Government, Agencia Estatal de Investigación, Fondo Europeo de Desarrollo Regional: AEI/FEDER, UE, under Grant TEC2016-76070-C3-1-R
ProjectGobierno de España. TEC2016-76070-C3-1-R
SubjectsBeam steering; couplers; phased arrays; phase shifters; Informática
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
This work presents the design and prototyping of a reconfigurable phased array in Ku band (16 to 18 GHz) implemented in waveguide technology. The design is based on the use of a novel seamless waveguide module integrating four reconfigurable phase shifters to adjust the relative phase shift between the unitary elements of a linear array, which are illuminated uniformly by a corporate waveguide feeding network. The phase shifters are implemented by a 90º hybrid coupler in waveguide technology where two of its ports are loaded with a tunable reactive load, implemented in this proof of concept with a tuning screw. The four phase shifters have been manufactured in a single part using direct metal laser sintering, avoiding the losses related to bad electric contacts and misalignments associated to multipart devices. This also simplifies the assembly of the full phased array, leading to a modular approach with three parts whose design can be addressed separately. The experimental results for the complete array antenna show great performance and demonstrate that the main-lobe of the radiation pattern can be effectively scanned continuously between the angles - 25º and 25º, with a high efficiency in the whole design band thanks to the proposed waveguide implementation
Google Scholar:Polo-López, Lucas - Masa Campos, José Luis - Muriel Barrado, Alfonso Tomás - Sánchez-Olivares, Pablo - García-Marín, Eduardo - Córcoles Ortega, Juan - Ruiz Cruz, Jorge Alfonso
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