A High Gain Antenna With an Optimized Metamaterial Inspired Superstrate

A High Gain Antenna With an Optimized Metamaterial Inspired Superstrate

A metamaterial unit cell with a low refractive index over a wide frequency band is proposed and designed. The effective material parameters of the unit cell are extracted, and the unit cell forms a planar three-layer metamaterial structure used as a superstrate for broadside gain enhancement of a pa...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2012-12, Vol.60 (12), p.6018-6023
Hauptverfasser: Dongying Li, Szabo, Z., Xianming Qing, Li, Er-Ping, Zhi Ning Chen
Format: Artikel
Sprache:eng
Schlagworte:
Antenna measurements
Antennas
Applied sciences
Effective material parameters
Exact sciences and technology
Frequency bands
Frequency measurement
Gain
High gain
high gain antennas
low index metamaterials
Magnetic materials
Metamaterials
Radiation sources
Radiocommunications
Scattering parameters
Simulation
Telecommunications
Telecommunications and information theory
Unit cell
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Beschreibung
Zusammenfassung:A metamaterial unit cell with a low refractive index over a wide frequency band is proposed and designed. The effective material parameters of the unit cell are extracted, and the unit cell forms a planar three-layer metamaterial structure used as a superstrate for broadside gain enhancement of a patch antenna at 10 GHz. The proposed superstrate is optimized along with the antenna to enhance its beam-focusing ability, taking into account the oblique wave incidence from the radiation source. Both simulation and measurement of the antenna with the optimized superstrate show that this configuration is able to achieve a broadside gain 70%-80% of the maximum gain from the ideal effective radiation surface.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2213231