Alternative Input Architecture for Balanced Diplexers Based on Over-Coupled H-Shaped Resonators With Independent Dual-Band Response
A novel technique for designing balanced-to-balanced diplexers with enhanced common-mode rejection is presented. In this approach, the conventional T-junction typically used to feed the diplexer output channels is replaced by a pair of over-coupled H-shaped resonators. Each output channel is impleme...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/180010 |
| Acceso en línea: | https://hdl.handle.net/11441/180010 https://doi.org/10.1109/ACCESS.2025.3624191 |
| Access Level: | acceso abierto |
| Palabra clave: | Balanced-to-balanced (B-B) diplexer Differential mode (DM) Common-mode (CM) rejection H-shaped resonator |
| Sumario: | A novel technique for designing balanced-to-balanced diplexers with enhanced common-mode rejection is presented. In this approach, the conventional T-junction typically used to feed the diplexer output channels is replaced by a pair of over-coupled H-shaped resonators. Each output channel is implemented using a second-order balanced filter, also based on H-shaped resonators. These filters are independently designed using standard coupled-resonator theory and are subsequently electromagnetically coupled to a common differential input port to achieve diplexing functionality. For performance comparison, two diplexers are designed: one employing the traditional T-junction and the other utilizing the proposed over-coupled H-shaped resonators. Both simulation and measurement results confirm the superiority of the proposed architecture in terms of common-mode rejection and overall performance. |
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