Terahertz circularly polarized multi-directional antennas using meta-coated 3-D near-zero index metamaterial

M Muthusamy, M Suresh, Z Ouyang - Optics & Laser Technology, 2025 - Elsevier
In this work, circularly polarized (CP) waves emitting multi-beam antennas (MBAs) such as
quad-directional antennas (QDA) and bi-directional antennas (BDA) are proposed in the …

Acoustic Zero-Index Metamaterials for Leaky-Wave Antennas

Y Wu - arXiv preprint arXiv:2410.20377, 2024 - arxiv.org
In this work, we introduce an advanced acoustic leaky-wave antenna employing zero-
refractive-index metamaterials (ZIMs) that significantly surpasses traditional designs in terms …

The novel broadening bandwidth method to the ε-μ-near-zero media for information manipulation and security device

TT Zhu, ML Huang, R Xu - Indian Journal of Physics, 2024 - Springer
At present, the prepared EMNZ media based on a resonance mechanism that is very
sensitive to frequency, in other words, they currently only operate at point frequency or in a …