Publication details
H-plane horn antenna with enhanced directivity using conformal transformation optics
| Authors | |
|---|---|
| Year of publication | 2021 |
| Type | Article in Periodical |
| Magazine / Source | Scientific Reports |
| MU Faculty or unit | |
| Citation | |
| web | https://doi.org/10.1038/s41598-021-93812-6 |
| Doi | https://doi.org/10.1038/s41598-021-93812-6 |
| Keywords | Electrical and electronic engineering; Materials for devices; Transformation optics |
| Description | Conformal transformation optics is employed to enhance an H-plane horn's directivity by designing a graded-index all-dielectric lens. The transformation is applied so that the phase error at the aperture is gradually eliminated inside the lens, leading to a low-profile high-gain lens antenna. The physical space shape is modified such that singular index values are avoided, and the optical path inside the lens is rescaled to eliminate superluminal regions. A prototype of the lens is fabricated using three-dimensional printing. The measurement results show that the realized gain of an H-plane horn antenna can be improved by 1.5-2.4 dB compared to a reference H-plane horn. |