Performance Enhancement of Square-Ring Antennas Exploiting Surface-Wave Metasurfaces
IEEE Antennas and Wireless Propagation Letters(2019)
Abstract
This letter proposes a technique to enhance the performance of a square-ring antenna by exciting surface waves. An asymmetrical metasurface (MS) is utilized to control the surface-wave resonances at different planes. To excite the surface waves, various configurations have been considered, namely, square-ring element above, below, and within the MS. The latter design, with a 0.07
$\lambda _o$
height profile, provides superior matching and gain performances compared to the others. It operates from 3.8 to 5 GHz (27
$\%$
fractional bandwidth) with a stable realized gain up to 11.9 dBi in the broadside direction. A prototype of the structure, with a simple probe-feeding mechanism, was fabricated and measured. An excellent agreement was attained between the simulated and measured data.
MoreTranslated text
Key words
Surface waves,Bandwidth,Antennas,Surface impedance,Random access memory,Dispersion,Substrates
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined