Compact Single-Layer Traveling-Wave Antenna DesignUsing Metamaterial Transmission Lines

被引：51
作者：
Alibakhshikenari, Mohammad [1 ]
Virdee, Bal Singh [2 ]
Limiti, Ernesto [1 ]
机构：
[1] Univ Roma Tor Vergata, Elect Engn Dept, Rome, Italy
[2] London Metropolitan Univ, Sch Comp & Digital Media, Ctr Commun Technol & Math, London, England
来源：
RADIO SCIENCE | 2017年 / 52卷 / 12期
关键词：
composite right/left-handed (CRLH) metamaterial transmission lines; double spiral inductor; interdigital capacitor; microstrip; planar antennas; traveling-wave antennas;
D O I：
10.1002/2017RS006313
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
This paper presents a single-layer traveling-wave antenna (TWA) that is based on composite right/left-handed (CRLH)-metamaterial (MTM) transmission line (TL) structure, which is implemented by using a combination of interdigital capacitors and dual-spiral inductive slots. By embedding dual-spiral inductive slots inside the CRLH MTM-TL results in a compact TWA. Dimensions of the proposed CRLH MTM-TL TWA is 21.5 x 30.0 mm(2) or 0.372 lambda(0) x 0.520 lambda(0) at 5.2 GHz (center frequency). The fabricated TWA operates over 1.8-8.6 GHz with a fractional bandwidth greater than 120%, and it exhibits a peak gain and radiation efficiency of 4.2 dBi and 81%, respectively, at 5 GHz. By avoiding the use of lumped components, via-holes or defected ground structures, the proposed TWA design is economic for mass production as well as easy to integrate with wireless communication systems.
引用
收藏
页码：1510 / 1521
页数：12
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