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Investigation of 3.1-10.6 GHz circular monopole antenna with modified partial ground plane
(2020-01-01)
Lamultree, Suthasinee
;
Jansri, Chalee
;
Phongcharoenpanich, Chuwong
A circular monopole antenna with modified partial ground plane for ultra wideband (UWB) applications is investigated in this paper. The proposed antenna is fed by a 50 Ω tapered microstrip line, and printed on a FR4 substrate with relative permittivity of 4.3 and height of 1.6 mm. All optimal parameters have been achieved to accomplish S<inf>11</inf> better than -10 dB with a nearly omnidirectional pattern and maximum gain of 3.83 dBi over 3.1-10.6 GHz. In addition, antenna prototype was fabricated and conducted experiment to verify the simulation. Apparently, simulated results are in very good agreement with the experimental results.
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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.
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A printed circular monopole antenna with slot and modified ground plane for UWB applications
(2018-07-02)
Jansri, Chalee
;
Phongcharoenpanich, Chuwong
;
Lamultree, Suthasinee
This paper presents a design of a circular monopole antenna for ultra wideband (UWB) applications. The antenna is fed by a 50 SI tapered microstrip line, and printed on a FR4 substrate with relative permittivity of 4.3 and height of 1.6 mm. All optimal parameters of a circular monopole with slot have been presented to accomplish |S11| better than -10 dB with good radiation over UWB frequency. The design includes a modified partial ground plane to enhance the S-parameter characteristics and radiation properties across the whole UWB frequency band. The parameters, which affect the performance of the antenna with respect to frequency characteristics, are investigated and reported.

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