Metamaterial-based antennas for integration in UWB transceivers and portable microwave handsets

被引:54
作者
Alibakhshi-Kenari, Mohammad [1 ]
Naser-Moghadasi, Mohammad [1 ]
Sadeghzadeh, Ramazan Ali [2 ]
Virdee, Bal Singh [3 ]
机构
[1] Islamic Azad Univ, Sci & Res Branch, Fac Engn, Tehran, Iran
[2] KN Toosi Univ Technol, Fac Elect & Comp Engn, Tehran, Iran
[3] London Metropolitan Univ, Ctr Commun Technol, London N7 8DB, England
关键词
index terms; planar antennas; metamaterials; left-handed structures; ultra-wideband;
D O I
10.1002/mmce.20942
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Two planar antennas based on metamaterial unit-cells are designed, fabricated, and tested. The unit-cell configuration consists of H-shaped or T-shaped slits and a grounded spiral. The slits essentially behave as series left-handed capacitance and the spiral as a shunt left-handed inductance. The unit-cell was modeled and optimized using commercial 3D full-wave electromagnetic simulation tools. Both antennas employ two unit-cells, which are constructed on the Rogers RO4003 substrate with thickness of 0.8 mm and epsilon(r) = 3.38. The size of H-shaped and T-shaped unit cell antennas are 0.06(0) x 0.02(0) x 0.003(0) and 0.05(0) x 0.02(0) x 0.002(0), respectively, where (0) is the free-space wavelength. The measurements confirm the H-shaped and T-shaped unit-cell antennas operate across 1.2-6.7 GHz and 1.1-6.85 GHz, respectively, for voltage standing wave ratio (VSWR) < 2, which correspond to fractional bandwidth of approximate to 140% and approximate to 145%, respectively. The H-shaped unit-cell antenna has gain and efficiency of 2-6.8 dBi and 50-86%, respectively, over its operational range. The T-shaped unit-cell antenna exhibits gain and efficiency of 2-7.1 dBi and 48-91%, respectively. The proposed antennas have specifications applicable for integration in UWB wireless communication systems and microwave portable devices. (c) 2015 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:88-96, 2016.
引用
收藏
页码:88 / 96
页数:9
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