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

Alibakhshi-Kenari, Mohammad and Naser-Moghadasi, Mohammad and Ali Sadeghzadeh, Ramazan and Virdee, Bal Singh (2015) Metamaterial-based antennas for integration in UWB transceivers and portable microwave handsets. International Journal of RF and Microwave Computer-Aided Engineering. n/a-n/a. ISSN 1096-4290

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Official URL: http://dx.doi.org/10.1002/mmce.20942

Abstract

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 er 5 3.38. The size of H-shaped and T-shaped unit cell antennas are 0.06k0 3 0.02k0 3 0.003k0 and 0.05k0 3 0.02k0 3 0.002k0, respectively, where k0 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 ~140% and ~ 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.

Item Type: Article
Uncontrolled Keywords: planar antennas; metamaterials; left-handed structures; ultra-wideband
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Related URLs:
Depositing User: Bal Virdee
Date Deposited: 14 Oct 2015 19:34
Last Modified: 11 Oct 2016 08:58
URI: http://repository.londonmet.ac.uk/id/eprint/781

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