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Low-cost dielectric substrate for designing low profile multiband monopole microstrip antenna.

Ahsan MR, Islam MT, Habib Ullah M, Arshad H, Mansor MF - ScientificWorldJournal (2014)

Bottom Line: This paper proposes a small sized, low-cost multiband monopole antenna which can cover the WiMAX bands and C-band.The proposed antenna of 20 × 20 mm(2) radiating patch is printed on cost effective 1.6 mm thick fiberglass polymer resin dielectric material substrate and fed by 4 mm long microstrip line.The experimental results show that the prototype of the antenna has achieved operating bandwidths (voltage stand wave ratio (VSWR) less than 2) 360 MHz (2.53-2.89 GHz) and 440 MHz (3.47-3.91 GHz) for WiMAX and 1550 MHz (6.28-7.83 GHz) for C-band.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia.

ABSTRACT
This paper proposes a small sized, low-cost multiband monopole antenna which can cover the WiMAX bands and C-band. The proposed antenna of 20 × 20 mm(2) radiating patch is printed on cost effective 1.6 mm thick fiberglass polymer resin dielectric material substrate and fed by 4 mm long microstrip line. The finite element method based, full wave electromagnetic simulator HFSS is efficiently utilized for designing and analyzing the proposed antenna and the antenna parameters are measured in a standard far-field anechoic chamber. The experimental results show that the prototype of the antenna has achieved operating bandwidths (voltage stand wave ratio (VSWR) less than 2) 360 MHz (2.53-2.89 GHz) and 440 MHz (3.47-3.91 GHz) for WiMAX and 1550 MHz (6.28-7.83 GHz) for C-band. The simulated and measured results for VSWR, radiation patterns, and gain are well matched. Nearly omnidirectional radiation patterns are achieved and the peak gains are of 3.62 dBi, 3.67 dBi, and 5.7 dBi at 2.66 GHz, 3.65 GHz, and 6.58 GHz, respectively.

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3D radiation pattern of the proposed antenna.
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Related In: Results  -  Collection


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fig7: 3D radiation pattern of the proposed antenna.

Mentions: 3D polar plot of far-field radiation patterns for the proposed antenna is shown in Figure 7. Figure 8 exhibits the comparison between the measured and simulated far-field radiation patterns in E-plane and H-plane for the frequencies at 2.66, 3.65, and 6.58 GHz. A little inconsistency can be spotted in measured results, more specifically the backward radiation. This may be due to the cable loss which is interposed between the antenna and controller. Other than this, the presented results indicate fairly good and steady patterns in the plane over the operating frequency bands. The copolarization patterns for E- and H-plane are almost symmetric and directional, whereas the cross polarization radiation patterns at different operating frequency bands, though, seem almost similar; however, their effect is observed to be increased with the increased frequencies as predicted. It has been observed that the designed antenna performs well in producing a nearly balanced radiation pattern radially for operating bands by maintaining low cross polarization as desired. These performance criteria would be certainly beneficial while designing antenna arrays and thus reasonably would produce a more stable radiation pattern across the operating frequency bands.


Low-cost dielectric substrate for designing low profile multiband monopole microstrip antenna.

Ahsan MR, Islam MT, Habib Ullah M, Arshad H, Mansor MF - ScientificWorldJournal (2014)

3D radiation pattern of the proposed antenna.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4127211&req=5

fig7: 3D radiation pattern of the proposed antenna.
Mentions: 3D polar plot of far-field radiation patterns for the proposed antenna is shown in Figure 7. Figure 8 exhibits the comparison between the measured and simulated far-field radiation patterns in E-plane and H-plane for the frequencies at 2.66, 3.65, and 6.58 GHz. A little inconsistency can be spotted in measured results, more specifically the backward radiation. This may be due to the cable loss which is interposed between the antenna and controller. Other than this, the presented results indicate fairly good and steady patterns in the plane over the operating frequency bands. The copolarization patterns for E- and H-plane are almost symmetric and directional, whereas the cross polarization radiation patterns at different operating frequency bands, though, seem almost similar; however, their effect is observed to be increased with the increased frequencies as predicted. It has been observed that the designed antenna performs well in producing a nearly balanced radiation pattern radially for operating bands by maintaining low cross polarization as desired. These performance criteria would be certainly beneficial while designing antenna arrays and thus reasonably would produce a more stable radiation pattern across the operating frequency bands.

Bottom Line: This paper proposes a small sized, low-cost multiband monopole antenna which can cover the WiMAX bands and C-band.The proposed antenna of 20 × 20 mm(2) radiating patch is printed on cost effective 1.6 mm thick fiberglass polymer resin dielectric material substrate and fed by 4 mm long microstrip line.The experimental results show that the prototype of the antenna has achieved operating bandwidths (voltage stand wave ratio (VSWR) less than 2) 360 MHz (2.53-2.89 GHz) and 440 MHz (3.47-3.91 GHz) for WiMAX and 1550 MHz (6.28-7.83 GHz) for C-band.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia.

ABSTRACT
This paper proposes a small sized, low-cost multiband monopole antenna which can cover the WiMAX bands and C-band. The proposed antenna of 20 × 20 mm(2) radiating patch is printed on cost effective 1.6 mm thick fiberglass polymer resin dielectric material substrate and fed by 4 mm long microstrip line. The finite element method based, full wave electromagnetic simulator HFSS is efficiently utilized for designing and analyzing the proposed antenna and the antenna parameters are measured in a standard far-field anechoic chamber. The experimental results show that the prototype of the antenna has achieved operating bandwidths (voltage stand wave ratio (VSWR) less than 2) 360 MHz (2.53-2.89 GHz) and 440 MHz (3.47-3.91 GHz) for WiMAX and 1550 MHz (6.28-7.83 GHz) for C-band. The simulated and measured results for VSWR, radiation patterns, and gain are well matched. Nearly omnidirectional radiation patterns are achieved and the peak gains are of 3.62 dBi, 3.67 dBi, and 5.7 dBi at 2.66 GHz, 3.65 GHz, and 6.58 GHz, respectively.

Show MeSH