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Subject: search.filters.subject.Circular monopole antenna

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    A compact dual-band circular monopole antenna with partial ground plane for 2.45/5.5 GHz WLAN applications
    (2019-03-01)
    Lamultree, Suthasinee
    ;
    Jansri, Chalee
    ;
    Phongcharoenpanich, Chuwong
    In this paper, a compact dual-band antenna for 2.45/5.5 GHz WLAN applications is presented. Geometry of a presented antenna consists of a circular-slot printed on a circular monopole with a partial ground plane, operated at 2.45 GHz and 5.5 GHz bands, respectively. It is constructed by using FR-4 substrates with ϵ<inf>r</inf> of 43 and 0.035 mm copper layer thickness. This antenna is compact with a size of 70 mm×80 mm×1.6 mm, and it is capable to easily integrate with other circuits. It is shown that this proposed antenna wholly covers the required bandwidths ranging from 2.4-2.485 GHz and 5.15-5.825 GHz with desirable radiation characteristics and magnitude of S<inf>11</inf> better than -10dB. To verify the simulation, an antenna prototype was made up and measured. Obviously, the simulation results are in well acceptance with the measured one.
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    Gain improvement of dual-band circular monopole antenna for 2.45/5.5 GHz WLAN applications
    (2019-01-01)
    Lamultree, Suthasinee
    ;
    Jansri, Chalee
    ;
    Phongcharoenpanich, Chuwong
    This paper presents a gain improvement of dual-band antenna for 2.45/5.5 GHz WLAN applications. The radiating element of the proposed antenna consists of a circular disc monopole with circular-slot laid on FR-4 substrate and backed by a partial ground plane. This partial ground plane is modified to improve its radiation performance. This proposed antenna operates over the frequencies of 2.4-2.485 GHz and 5.15-5.825 GHz with nice radiation characteristics and magnitude of S11 better than -10 dB. An EM simulator has been used in the design and simulation. In addition, an experimental validation was set and measured to compare with the simulated results. All numerical results will be reported and discussed in the paper.