Synthesis of rectangular waveguide filters with smooth profile oriented to direct metal additive manufacturing
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Impacto
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10.1109/TMTT.2023.3245683
Resumen
In this paper, a novel design method for rectangular waveguide filters intended for fabrication using direct metal additive manufacturing is proposed. The synthesized filters will feature a smooth profile that allows us to fabricate them orienting the filter propagation axis in the vertical building direction, achieving an optimum configuration for direct metal additive manufacturing fabrication. ...
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In this paper, a novel design method for rectangular waveguide filters intended for fabrication using direct metal additive manufacturing is proposed. The synthesized filters will feature a smooth profile that allows us to fabricate them orienting the filter propagation axis in the vertical building direction, achieving an optimum configuration for direct metal additive manufacturing fabrication. The novel design method is valid for any all-pole transfer function, which is initially implemented with a commensurate-line distributed unit element prototype. The impulse response of that initial prototype is then properly interpolated to obtain the target response for a smooth-profiled filter with similar length and profile excursion. Finally, the target impulse response just generated is implemented in rectangular waveguide technology employing a novel inverse scattering synthesis technique that relies on the coupled-mode theory to model the electromagnetic behavior of the waveguide filter. The novel inverse scattering synthesis technique is general and also valid for the case of filters with very high rejection levels, which is of great relevance in rectangular waveguide technology. A Ku-band low-pass filter with stringent satellite specifications is designed using the proposed method, fabricated by means of a direct metal additive manufacturing technique, and measured with a vector network analyzer. A very good agreement is achieved between the simulated and measured results, fulfilling the required specifications and demonstrating the feasibility and performance of the novel design method. [--]
Materias
Additive manufacturing (AM),
Coupled-mode theory,
Filter synthesis,
Inverse scattering,
Microwave filter,
Rectangular waveguide
Editor
IEEE
Publicado en
IEEE Transactions on Microwave Theory and Techniques (2023)
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
This
work was supported in part by the Spanish Ministerio de Ciencia e
Innovación—Agencia Estatal de Investigación (MCIN/AEI/10.13039/
501100011033) under Project TEC2017-85529-C3-2-R (co-funded by
the Fondo Europeo de Desarrollo Regional (FEDER) “A way to make
Europe”) and Project PID2020-112545RB-C53, and in part by the Advanced
Technologies for future European Satellite Applications (TESLA) Project
(European Union’s Horizon 2020 Research and Innovation Programme
through the Marie Sklodowska-Curie Grant) under Grant 811232.