1D Koch fractal electromagnetic bandgap microstrip structures with r/a ratios higher than 0.5
✍ Scribed by Juan de Dios Ruiz; Félix L. Martínez; Juan Hinojosa
- Book ID
- 102517564
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 491 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A 1D 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 1D electromagnetic bandgap (EBG) microstrip structure with periodic hole pattern, the design is limited to r/a ratios lower than 0.45, whereas the proposed pattern allows achieving r/a ratios higher than 0.5. It is shown that 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 1D KFEBG microstrip structure presents a ultra‐wide stopband and, therefore, the proposed structure with r/a > 0.5 can be useful for the design of low‐pass filters. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:646–649, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25763