Effect of Material Thickness on Attenuation (dB) of PTFE Using Finite Element Method at X-Band Frequency

Yakubu, Abubakar; Abbas, Zulkifly; Hashim, Mansor

doi:10.1155/2014/965912

Cited by 6 publications

(4 citation statements)

References 7 publications

(7 reference statements)

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“…In Figure 6, S11 is maximum at 11 GHz (0.729471), while the maximum value of S21 was observed at 8.58 GHz (0.173066). The behavior of both S11 and S21 are in sequence with earlier results where increase in permittivity increases S11 (Pozar, 2009;Yakubu et al, 2014).…”

Section: Resultssupporting

confidence: 88%

“…It is reported in Sohaib and Tripathy (2014), that performance of antenna improves when the value of dielectric constant reduces. As it is also confirmed by (Waghmare et al, 2016) In Figure 4, observations shows that, as the permittivity of duroid increases the S11 increases supporting the effective medium theory (Yakubu et al, 2014). In Figure 6, S11 is maximum at 11 GHz (0.729471), while the maximum value of S21 was observed at 8.58 GHz (0.173066).…”

Section: Resultssupporting

confidence: 77%

“…The next step is to calculate the values of scattering parameters (S11 and S21) using the COMSOL software. The key equation in the simulator is the wave equation shown in (5) (Yakubu et al, 2014;& Yakubu et al, 2020);…”

Section: Figure 1: High Mesh Density Of An Overlay Microstrip Antennamentioning

confidence: 99%

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Determination Of Reflection And Transmission Coefficient Of An Overlay Microstrip Antenna On Duroid Material Using Fem

Sahabi

Yakubu

2022

Preprint

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Knowledge of materials behaviour placed in an electromagnetic field was found to be of immense significant especially as it is attributed to military hardware, electronics, communication and industrial applications. An overlay microstrip antenna was employed in this study to determine scattering parameters of an overlay microstrip antenna using finite element method (FEM). The substrate thickness used on the microstrip was 10 mm thick and 8 x 12 cm (width and length). All simulation was carried at X band frequency range (8-12 GHz) using FEM. The result amongst others showed that the transmission coefficient depends on the permittivity of the sample. The result also showed that lowest permittivity of material produced the greatest transmission coefficient. It is then concluded that the results obtained for the transmission and reflection coefficients can be used for the prediction of complex permittivity of materials used as overlay on a microstrip antenna.

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Section: Resultssupporting

confidence: 88%

Section: Resultssupporting

confidence: 77%

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Determination Of Reflection And Transmission Coefficient Of An Overlay Microstrip Antenna On Duroid Material Using Fem

Sahabi

Yakubu

2022

Preprint

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“…The scattering or S parameters of a two-port network are defined in terms of the wave variables [10].…”

Section: Methodsmentioning

confidence: 99%

Attenuation and Shielding Performance of Wood-Polymer Composites Synthesized via Melt-Blend Technique

Yakubu¹,

Abbas²,

Abdullahi³

2020

OALib

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In the recent, filler-polymer composites researches have been on the rise due to its implication to electromagnetic interference (EMI) applications. The composition, morphology and surface rheology of the filler-polymer composites play an immense role in determining the electrical, mechanical, and optical properties. In this paper, the preparation and characterization of micro-composites of wood (biodegradable waste material)/polycaprolactone (PCL) composites are reported. The micro-composites were prepared using melt blend technique via the solid state route. This method was selected because of its numerous advantages compared to other methods such as being easy, cheap with mass production of materials. To determine attenuation, rectangular waveguide (RWG) method was used. The magnitudes of the transmission coefficient (S 21) from the waveguide measurement were used to determine the attenuation of the wood-PCL composite substrate with respect to different percentages of wood filler. Result from the measurement showed amongst others that as the filler content increases, the attenuation increases. The highest magnitude for attenuation was calculated for the 62.5% wood-PCL composites with a value of −6.46 dB and the least attenuation was calculated for the 12.5% wood micro filler, which value gave −3.34 dB which is good for low shielding applications. Scanning electron microscope (SEM) was used to study the surface morphology of the samples.

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Effect of ZnO-PCL Nanocomposite Thickness on Attenuation in a Rectangular Waveguide at Microwave Frequency using FEM

Yakubu

Abbas

Ibrahim

2015

Journal of Microwave Power and Electromagnetic Energy

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Effect of Material Thickness on Attenuation (dB) of PTFE Using Finite Element Method at X-Band Frequency

Cited by 6 publications

References 7 publications

Determination Of Reflection And Transmission Coefficient Of An Overlay Microstrip Antenna On Duroid Material Using Fem

Determination Of Reflection And Transmission Coefficient Of An Overlay Microstrip Antenna On Duroid Material Using Fem

Attenuation and Shielding Performance of Wood-Polymer Composites Synthesized via Melt-Blend Technique

Effect of ZnO-PCL Nanocomposite Thickness on Attenuation in a Rectangular Waveguide at Microwave Frequency using FEM

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