Improvement of bandwidth and efficiency for directive superstrate EBG antenna

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Improvement of bandwidth and efficiency for directive superstrate EBG antenna

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The criteria of bandwidth and gain are of prime importance for high rate wireless systems. The electromagnetic bandgap (EBG) antenna, which could be a good candidate for microwave and millimetre link systems, is regarded as a promising solution to achieve a directive antenna with high gain but limited to a narrow band. Presented is a solution to increase the above performances using a three-dimensional antenna structure associating EBG materials technology and that of the metallic waveguide one. The calculated and measured performances of the optimised antenna at 38.9 GHz confirms an improvement of bandwidth (from 150 MHz to 1 GHz) and efficiency (from 20 to 47%).

Inspec keywords: microwave antennas; waveguide components; microwave links; directive antennas; millimetre wave antennas

Other keywords: directive superstrate EBG antenna; three-dimensional antenna structure; millimetre link systems; metallic waveguide; electromagnetic bandgap antenna; microwave link systems; high rate wireless systems; EBG materials technology

Subjects: Waveguide and microwave transmission line components; Radio links and equipment; Single antennas

References

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      • D.R. Jackson , N.G. Alexopoulos . Gain enhancement methods by printed circuit antennas. IEEE Trans. Antennas Propag.
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      • L. Leger , T. Monediere , B. Jecko . Enhancement of gain and radiations bandwidth for a planar 1-D EBG antenna. IEEE Microw. Wirel. Compon. Lett.
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      • H.Y. Yang , N.G. Alexopoulos . Gain enhancement methods for printed circuit antennas through multiple superstrates. IEEE Trans. Antennas Propag.
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      • R. Comte , S. Gendraud , S. Verdeyme , P. Guillon , C. Bochet , B. Theron . A high Q factor microwave cavity. IEEE MTT-S Int. Microw. Symp. Dig.
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