| Autor: |
Albert Salmi, Anu Lehtovuori, Ville Viikari |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 3, Pp 653-663 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2637-6431 |
| DOI: |
10.1109/OJAP.2024.3382833 |
| Popis: |
This paper introduces a method for computing reactive terminations for scatterer elements in antenna arrays. With the fixed scatterer elements, we shape embedded element patterns of sparse arrays to focus the radiation into a grating-lobe-free limited field of view. The reactive terminations of the scatterer elements are determined by optimizing reflection coefficients on a Riemannian manifold. In addition, we show that widening the grating-lobe-free field of view is possible by tilting the field of view. We design both 5-element linear and 4-by-4-element planar reactively loaded antenna arrays with 1.4-wavelength inter-element distances. The terminations of the scatterer elements are optimized so that the arrays cover either the broadside-located or the tilted grating-lobe-free field of view. The results obtained from the linear array are validated through measurements of manufactured prototypes. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
