Al-Bawri Samir Salem, Hwang Goh Hui, Islam Md Shabiul, Wong Hin Yong, Jamlos Mohd Faizal, Narbudowicz Adam, Jusoh Muzammil, Sabapathy Thennarasan, Khan Rizwan, Islam Mohammad Tariqul
Faculty of Engineering, Multimedia University, Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia.
Department of Electronics & Communication Engineering, Faculty of Engineering & Petroleum, Hadhramout University, Al-Mukalla 50512, Hadhramout, Yemen.
Sensors (Basel). 2020 Jan 31;20(3):796. doi: 10.3390/s20030796.
A printed compact monopole antenna based on a single negative (SNG) metamaterial is proposed for ultra-wideband (UWB) applications. A low-profile, key-shaped structure forms the radiating monopole and is loaded with metamaterial unit cells with negative permittivity and more than 1.5 GHz bandwidth of near-zero refractive index (NZRI) property. The antenna offers a wide bandwidth from 3.08 to 14.1 GHz and an average gain of 4.54 dBi, with a peak gain of 6.12 dBi; this is in contrast to the poor performance when metamaterial is not used. Moreover, the maximum obtained radiation efficiency is 97%. A reasonable agreement between simulation and experiments is realized, demonstrating that the proposed antenna can operate over a wide bandwidth with symmetric split-ring resonator (SSRR) metamaterial structures and compact size of 14.5 × 22 mm (0.148 λ × 0.226 λ) with respect to the lowest operating frequency.
本文提出了一种基于单负（SNG）超材料的印刷紧凑型单极天线，用于超宽带（UWB）应用。一种低剖面的钥匙形结构构成了辐射单极子，并加载了具有负介电常数和超过1.5 GHz近零折射率（NZRI）特性带宽的超材料单元。该天线提供了从3.08到14.1 GHz的宽带宽和4.54 dBi的平均增益，峰值增益为6.12 dBi；这与不使用超材料时的较差性能形成对比。此外，获得的最大辐射效率为97%。仿真和实验之间实现了合理的一致性，表明所提出的天线可以在宽带宽下工作，采用对称分裂环谐振器（SSRR）超材料结构，相对于最低工作频率，尺寸紧凑，为14.5×22 mm（0.148λ×0.226λ）。
