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Journal ArticleDOI

Design of high efficiency cylindrical dielectric resonator antenna based on topological photonic crystals

Yifan Zhou, +4 more
- 28 Feb 2023 - 
- Vol. 133, Iss: 8, pp 083103-083103
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TLDR
In this article , the authors proposed using a topological photonic crystal (TPC) as an effective feeding method, which can effectively suppress the reflecting loss at the feeder/DRA interface.
Abstract
Over the last 30 years, various dielectric resonator antennas (DRAs) have been developed for application in portable wireless communications and millimeter wave systems. However, current methods to feed the antennas suffer from radiation leakage and high losses. In this paper, we propose using a topological photonic crystal (TPC) as an effective feeding method, which can effectively suppress the reflecting loss at the feeder/DRA interface. As a demonstration, we numerically design a DRA with a TPC feeder, operating in a high-order resonant mode at 1.5 THz. Simulation results show that the antenna has a return loss as low as 44 dB, an impedance bandwidth of 3.9%, a maximum gain of 7.4 dBi, and 3dB angular widths of 58 degrees. Over 99% radiation efficiency can be achieved at the operating THz band. The proposed all-dielectric antenna can be suitably used for integrated photonic chips, biomedical applications, and 6G.

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References
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Journal ArticleDOI

Photonic topological insulators

TL;DR: It is shown that metacrystals-superlattices of metamaterials with judiciously designed properties-provide a platform for designing topologically non-trivial photonic states, similar to those identified for condensed-matter topological insulators.
Journal ArticleDOI

The resonant cylindrical dielectric cavity antenna

TL;DR: In this article, an experimental investigation of the radiation and circuit properties of a resonant cylindrical dielectric cavity antenna has been undertaken, and a simple theory utilizing the magnetic wall boundary condition is shown to correlate well with measured results for radiation patterns and resonant frequencies.
Journal ArticleDOI

Dielectric resonator antennas—a review and general design relations for resonant frequency and bandwidth

TL;DR: In this paper, a comprehensive review of the modes and the radiation characteristics of open dielectric resonators (DRs) of different shapes, such as cylindrical, spherical, and rectangular, is presented.
Journal ArticleDOI

Dielectric Resonator Antennas: A Historical Review and the Current State of the Art

TL;DR: In this paper, the authors present a historical review of the research carried out on dielectric resonator antennas (DRAs) over the last three decades and highlight major research activities in each decade.
Journal ArticleDOI

Experimental realization of photonic topological insulator in a uniaxial metacrystal waveguide

TL;DR: The photonic analogue of topological insulator is experimentally realized by embedding non-bianisotropic and non-resonant metacrystal into a waveguide and the topologically non-trivial bandgap is confirmed by experimentally measured transmission spectra and calculated non-zero spin Chern numbers.
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