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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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Photograph of the anechoic measurement chamber.
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fig5: Photograph of the anechoic measurement chamber.

Mentions: After successful completion of the design aspects, a prototype has been constructed and measured. With the aid of Agilent's vector network analyzer (VNA, Agilent E8362C), the antenna parameters have been measured in a standard far-field anechoic measurement chamber (5.5 × 4.5 × 4 m3). The photograph of the anechoic chamber is presented in Figure 5. The floor, roof, and wall of the chamber are covered with arrays of pyramid-shaped foam as a radiation absorbent material (less than −60 dB reflectivity). A turn table of 1.2 m diameter has been used to rotate the antenna under test (AUT) specimen at 1 RPM speed, which can cover 360 degrees. A 10-meter cable is used to connect the controller and VNA. A pyramidal horn antenna has been used as reference antenna and placed on top of the antenna sliding positioner. The simulated and measured outputs for antenna parameters have been further analyzed and graphically presented by available software package and computer aided tools.


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)

Photograph of the anechoic measurement chamber.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig5: Photograph of the anechoic measurement chamber.
Mentions: After successful completion of the design aspects, a prototype has been constructed and measured. With the aid of Agilent's vector network analyzer (VNA, Agilent E8362C), the antenna parameters have been measured in a standard far-field anechoic measurement chamber (5.5 × 4.5 × 4 m3). The photograph of the anechoic chamber is presented in Figure 5. The floor, roof, and wall of the chamber are covered with arrays of pyramid-shaped foam as a radiation absorbent material (less than −60 dB reflectivity). A turn table of 1.2 m diameter has been used to rotate the antenna under test (AUT) specimen at 1 RPM speed, which can cover 360 degrees. A 10-meter cable is used to connect the controller and VNA. A pyramidal horn antenna has been used as reference antenna and placed on top of the antenna sliding positioner. The simulated and measured outputs for antenna parameters have been further analyzed and graphically presented by available software package and computer aided tools.

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