Compact wideband groove gap waveguide bandpass filters manufactured with 3D printing and CNC milling techniques
| dc.contributor.author | Máximo-Gutierrez, Clara | |
| dc.contributor.author | Hinojosa, Juan | |
| dc.contributor.author | Abad, José | |
| dc.contributor.author | Urbina Yeregui, Antonio | |
| dc.contributor.author | Álvarez-Melcon, Alejandro | |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.contributor.department | Ciencias | es_ES |
| dc.contributor.department | Zientziak | eu |
| dc.date.accessioned | 2025-04-14T15:21:04Z | |
| dc.date.available | 2025-04-14T15:21:04Z | |
| dc.date.issued | 2023-07-07 | |
| dc.date.updated | 2025-04-14T15:01:59Z | |
| dc.description.abstract | This paper presents for the first time a compact wideband bandpass filter in groove gap waveguide (GGW) technology. The structure is obtained by including metallic pins along the central part of the GGW bottom plate according to an n-order Chebyshev stepped impedance synthesis method. The bandpass response is achieved by combining the high-pass characteristic of the GGW and the low-pass behavior of the metallic pins, which act as impedance inverters. This simple structure together with the rigorous design technique allows for a reduction in the manufacturing complexity for the realization of high-performance filters. These capabilities are verified by designing a fifth-order GGW Chebyshev bandpass filter with a bandwidth BW = 3.7 GHz and return loss RL = 20 dB in the frequency range of the WR-75 standard, and by implementing it using computer numerical control (CNC) machining and three-dimensional (3D) printing techniques. Three prototypes have been manufactured: one using a computer numerical control (CNC) milling machine and two others by means of a stereolithography-based 3D printer and a photopolymer resin. One of the two resin-based prototypes has been metallized from a silver vacuum thermal evaporation deposition technique, while for the other a spray coating system has been used. The three prototypes have shown a good agreement between the measured and simulated S-parameters, with insertion losses better than IL = 1.2 dB. Reduced size and high-performance frequency responses with respect to other GGW bandpass filters were obtained. These wideband GGW filter prototypes could have a great potential for future emerging satellite communications systems. | en |
| dc.description.sponsorship | The authors gratefully acknowledge financial support from Agencia Estatal de Investigación (AEI) and Fundación Séneca Región de Murcia of Spain for their financial support (grants no.: PID2019-103982RB-C42/AEI/10.13039/501100011033, TED2021-129196B-C42 and 22076/PI/22). | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Máximo-Gutierrez, C., Hinojosa, J., Abad-López, J., Urbina-Yeregui, A., Alvarez-Melcon, A. (2023) Compact wideband groove gap waveguide bandpass filters manufactured with 3D printing and CNC milling techniques. Sensors, 23(13), 1-17. https://doi.org/10.3390/S23136234. | |
| dc.identifier.doi | 10.3390/S23136234 | |
| dc.identifier.issn | 1424-8220 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/53988 | |
| dc.language.iso | eng | |
| dc.publisher | MDPI | |
| dc.relation.ispartof | Sensors 2023, 23(13), 6234 | |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-103982RB-C42/ES/ | |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI//TED2021-129196B-C42/ | |
| dc.relation.publisherversion | https://doi.org/10.3390/S23136234 | |
| dc.rights | © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | 3D printing | en |
| dc.subject | Bandpass filter | en |
| dc.subject | CNC machining | en |
| dc.subject | Groove gap waveguide technology | en |
| dc.subject | Lowpass filter | en |
| dc.subject | Stepped impedance synthesis | en |
| dc.title | Compact wideband groove gap waveguide bandpass filters manufactured with 3D printing and CNC milling techniques | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | b4dc7f62-5824-4def-8434-945c0ca3ca96 | |
| relation.isAuthorOfPublication.latestForDiscovery | b4dc7f62-5824-4def-8434-945c0ca3ca96 |