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Low-profile dual-frequency circular microstrip antenna for dual ISM bands

Low-profile dual-frequency circular microstrip antenna for dual ISM bands

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© IEE
Published

A novel dual-frequency design of a single-layer, single-feed circular microstrip antenna for dual ISM bands is demonstrated. Due to the embedding of an offset open-ring slot in a circular patch, a novel dual-frequency operation with its two operating modes centred at about frequencies 2.4 and 5.2 GHz has been obtained. The two operating frequencies have similar broadside radiation patterns and same polarisation planes, and small antenna-gain variation. Details of the antenna design and experimental results for the proposed antenna are presented.

Inspec keywords: electromagnetic wave polarisation; circular waveguides; microstrip antennas; antenna radiation patterns

Other keywords: dual ISM bands; antenna-gain variation; operating modes; offset open-ring slot; circular patch; broadside radiation patterns; polarisation planes; low-profile dual-frequency circular microstrip antenna; antenna design; 2.4 GHz; 5.2 GHz

Subjects: Waveguide and microwave transmission line components; Single antennas

References

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      • P. Salonen , M. Keskilammi , M. Kivikoski . New slot configurations for dual-band planar inverted-F antenna. Microw. Opt. Technol. Lett. , 293 - 298
    3. 3)
      • S.A. Long , M.D. Walton . A dual-frequency stacked circular-disk antenna. IEEE Trans. Antennas Propag. , 270 - 273
    4. 4)
      • J.Y. Jan , K.L. Wong . Single-feed dual-frequency circular microstrip antenna with an open-ringslot. Microw. Opt. Technol. Lett. , 157 - 160
    5. 5)
      • Z. Fan , K.F. Lee . Hankel transform domain analysis of dual-frequency stacked circular-diskand annular-ring microstrip antennas. IEEE Trans. Antennas Propag. , 867 - 870
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