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. 2022 Sep 5;380(2231):20210402.
doi: 10.1098/rsta.2021.0402. Epub 2022 Jul 18.

Multi-scale bullseye antennas

G J Chaplain  1 , I R Hooper  1 , T A Starkey  1
Affiliations

Multi-scale bullseye antennas

G J Chaplain et al. Philos Trans A Math Phys Eng Sci. .

Abstract

We design, simulate and experimentally characterize a multi-scale bullseye antenna for the broadband manipulation of microwaves. The device achieves far-field beam-forming via tailored diffraction at the interface between two concentric bullseye geometries, with near-field energy concentration resulting from the overlap of the diffracted beams. This article is part of the theme issue 'Wave generation and transmission in multi-scale complex media and structured metamaterials (part 1)'.

Keywords: beam-forming; diffraction; waveguiding.

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