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

页码：1510 / 1521

页数：12

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