1D Koch fractal electromagnetic bandgap microstrip structures with r/a ratios higher than 0.5
A 1-D Koch fractal electromagnetic bandgap (KFEBG) microstrip structure is proposed. It is conceived by replacing the conventional holes etched in the ground plane of a microstrip line by level-1 Koch fractal cell geometries, which have been obtained from a hexagonal shape. In the case of the conven...
| Autores: | , , |
|---|---|
| Tipo de documento: | artigo |
| Data de publicação: | 2011 |
| País: | España |
| Recursos: | Universidad Politécnica de Cartagena(UPCT) |
| Repositório: | Repositorio Digital UPCT |
| OAI Identifier: | oai:repositorio.upct.es:10317/1903 |
| Acesso em linha: | http://hdl.handle.net/10317/1903 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Electromagnetic bandgap structures Filter Fractal structures Microstrip Electrónica |
| Resumo: | A 1-D Koch fractal electromagnetic bandgap (KFEBG) microstrip structure is proposed. It is conceived by replacing the conventional holes etched in the ground plane of a microstrip line by level-1 Koch fractal cell geometries, which have been obtained from a hexagonal shape. In the case of the conventional 1-D EBG microstrip structure with periodic hole pattern, the design is limited to r / a ratios lower than 0.45, while the proposed pattern allows achieving r / a ratios higher than 0.5. It is shown the conventional EBG and KFEBG microstrip structures behave as a stopband filter as r / a ≤ 0.45 . However, for r/ a = 0.55, the measurements have confirmed that the 1-D KFEBG microstrip structure presents a ultrawide stopband and, therefore, the proposed structure with r / a > 0.5 can be useful for the design of low-pass filters. |
|---|