| Autor: |
S. R. Lee, E. H. Lim, F. L. Lo, K. H. Tan |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Radioengineering, Vol 26, Iss 4, Pp 984-991 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1210-2512 |
| Popis: |
This paper presents a dielectric resonator antenna (DRA) reflectarray unit element with multiple loading circular slots underneath in concentric form. The radii of the three slots are varied simultaneously to function as phase-shifting elements. For the case of three under-loading slots, it is very interesting to find out that the slot and DRA resonances can be pulled together to provide a very broad phase range of 916°. Study shows that the gradient and phase range of the S curve can be easily tuned by manipulating the dimensions of the under-loading slots. Waveguide method has been used to establish the simulation and measurement models. The reflection properties of the DRA unit elements loaded with different ring-shaped slots are compared, along with a complete parametric analysis. The proposed reflectarray unit element is very compact as its phase shifter can be entirely hidden beneath the DRA. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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