Extended Aperture Miniature Antenna Based on CRLH Metamaterials for Wireless Communication Systems Operating Over UHF to C-Band

被引：50

作者：

Alibakhshikenari, Mohammad ^{[1
]}

Virdee, Bal S. ^{[2
]}

Ali, Abdul ^{[1
]}

Limiti, Ernesto ^{[1
]}

机构：

[1] Univ Roma Tor Vergata, Dept Elect Engn, Rome, Italy

[2] London Metropolitan Univ, Sch Comp & Digital Media, Ctr Commun Technol, London, England

来源：

RADIO SCIENCE | 2018年 / 53卷 / 02期

关键词：

Composite right; left-handed metamaterials; planar wideband antenna; slot antenna; coplanar waveguide; wireless communication systems; portable devices; COMPACT;

D O I：

10.1002/2017RS006515

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper presents a simple technique to extend the aperture of planar composite right/left-handed (CRLH) metamaterial antennas with minimal impact on the antenna's dimensions. Unlike most CRLH antenna structures the proposed antenna is via-free. The proposed antenna is shown to operate over a wideband from UHF to C-band with good radiation characteristics. The antenna configuration consists of a vertically stacked CRLH unit cells comprising a patch and meandered lines, where the patch is engraved with an S-shaped slot. The design uses minimal ground plane area. The meander line inductance is grounded using coplanar waveguide (CPW) ground which eliminates conventional CRLH transmission line metallic via into ground plane. The antenna is feed through a coplanar waveguide (CPW) match stub that is electromagnetically coupled to the unit cells. Antenna dimensions are 17.5x32.15x1.6mm(3), which corresponds to 0.204) is 3.5GHz. Parametric study enabled the optimization of the antenna performance in terms of impedance bandwidth, radiation gain, and radiation efficiency. Measured results confirm that the antenna can operate from 850MHz to 7.90GHz, which is equivalent to a fractional bandwidth of 161.14%. The antenna has a maximum gain and radiation efficiency of 5.12dBi and 80%, respectively, at 3.5GHz.

引用

页码：154 / 165

页数：12

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