Dual-band filtering slot array antenna for W-band application
A co-aperture dual-band linearly polarized slot array based on ridge gap waveguide (RGW), operating at the 74 - 78 GHz and 102 - 106 GHz bands, is designed. In each subarray, two groups of longitudinal slots for two frequency bands are excited by a single RGW channel to achieve dual-band unidirectio...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Pública de Navarra |
| Repositorio: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra |
| OAI Identifier: | oai:academica-e.unavarra.es:2454/56095 |
| Acceso en línea: | https://hdl.handle.net/2454/56095 |
| Access Level: | acceso abierto |
| Palabra clave: | Slot array Bandpass filter Dual-band Gap waveguide |
| Sumario: | A co-aperture dual-band linearly polarized slot array based on ridge gap waveguide (RGW), operating at the 74 - 78 GHz and 102 - 106 GHz bands, is designed. In each subarray, two groups of longitudinal slots for two frequency bands are excited by a single RGW channel to achieve dual-band unidirectional radiation. Additionally, grooves and notches are implemented inside the RGW structure to improve dual-band matching, and two bandpass filters (BPFs) are incorporated at each side of the subarray to realize independent dual-band feeding while also providing filtering characteristics. The proposed subarray operates as a single channel. It can expand into a multichannel array, enabling multiple-input multiple-output (MIMO) when each subarray is individually excited or broadside radiation when all subarrays are simultaneously excited. A planar array of four subarray columns was fabricated to validate the dual-band concept and its broadside radiation performance. The simulated and measured results show good agreement. |
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