Radiation and resonant frequency of a resistive patch and uniaxial anisotropic substrate with entire domain and roof top functions

Boufrioua, Amel; Benghalia, Abdelmadjid

doi:10.1016/j.enganabound.2007.11.007

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…It is important to note that the normalization is with respect to f 0 of the magnetic wall cavity. The calculated results for the two sets of basis functions shown in Figure 2 agree very well with experimental results obtained by other authors [7], we found an excellent agreement with a slight shift in the resonant frequency when we use entire domain basis functions compared to the measured results given by [7], on the other hand computations show that the roof top subdomain basis functions provides a significant improvement in the computations time with less iterations in the evaluation of the resonant frequency of a microstrip patch compared to the entire domain sinusoid basis functions [3,8]. It should be noted that the convergence of the solution was investigated by varying the number of subsections.…”

Section: Numerical Resultssupporting

confidence: 90%

“…Since that we have included the effect of uniaxial anisotropic substrate and the effect of superstrate in the Green's functions, also the effect of the non-zero surface resistance at the resistance matrix and consequently at the impedance matrix the different antenna characteristics can be easily obtained similar to [1][2][3][4], [7,8].…”

Section: Figure 1 Resistive Rectangular Patch Inasubstrate-superstramentioning

confidence: 99%

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The RCS of a Resistive Rectangular Patch Antenna in a Substrate-Superstrate Geometry

Boufrioua¹

2013

WCMC

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The scattering radar cross section (RCS) and the resonant frequency problem of a superstrate loaded resistive rectangular microstrip patch which is printed on isotropic or uniaxial anisotropic substrate are investigated, where an accurate design based on the moment method technique is developed. The choice of two types of basis functions (entire domain and roof top functions) is illustrated to develop the unknown currents on the patch. The accuracy of the computed technique is presented and compared with other computed results.

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Section: Numerical Resultssupporting

confidence: 90%

Section: Figure 1 Resistive Rectangular Patch Inasubstrate-superstramentioning

confidence: 99%

The RCS of a Resistive Rectangular Patch Antenna in a Substrate-Superstrate Geometry

Boufrioua¹

2013

WCMC

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“…In the design of microwave-integrated circuit components and microstrip patch antennas, anisotropic materials have been progressively popular. Especially the effects of uniaxial-type anisotropy have been investigated [7–11] due to the availability of this kind of materials such as Sapphire, Magnesium fluoride, and Epsilam-10. In these works, the physical parameters of the antenna are replaced with effective ones in order to line up the obtained theoretical results with the measured data.…”

Section: Introductionmentioning

confidence: 99%

Neurospectral computation for the resonant characteristics of microstrip patch antenna printed on uniaxially anisotropic substrates

Barkat

Bedra

Fortaki

et al. 2016

Int. J. Microw. Wireless Technol.

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Modeling and design of rectangular microstrip patch printed on isotropic or anisotropic substrate are accomplished in this paper. The use of spectral domain method in conjunction with artificial neural networks (ANNs) to compute the resonant characteristics of rectangular microstrip patch printed on isotropic or anisotropic substrates. The moment method implemented in the spectral domain offers good accurateness, but its computational cost is high owing to the evaluation of the slowly decaying integrals and the iterative nature of the solution process. The paper introduces the electromagnetic knowledge combined with ANN in the analysis of rectangular microstrip antenna on uniaxially anisotropic substrate to reduce the complexity of the spectral domain method and to minimize the CPU time necessary to obtain the numerical results. The numerical comparison between neurospectral and conventional moment methods shows significant improvements in time convergence and computational cost. Hence, the use of neurospectral approach presented here as a promising fast technique in the design of microstrip antennas.

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“…However, little is known about the effects of substrate's electromagnetic properties on antenna performance . Because of the complexity involved, the antenna performance is often determined by finite element methods and integral equations based on numerical techniques , or by experimental testing . Analytical solutions, if available, would be desirable to conduct parametric study of the substrate's variables affecting antenna performance.…”

Section: Introductionmentioning

confidence: 99%

On the performance of microstrip antenna embedded in composite laminated substrates

Yang

Hung

2014

Int J Numerical Modelling

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Fiber-reinforced composite structures can be tailored to desire mechanical properties and to embed microstrip antenna in aerospace applications. The electromagnetic characteristics of a microstrip antenna on isotropic and uniaxial substrates have been known, but that embedded in composite laminated substrates remain unavailable to date. This work aims at analyzing the performance of microstrip antenna embedded in composite laminated substrates by spectral domain analysis. Parameter studies are conducted to investigate the effects of the substrate's dielectric constants, the fiber directions (the orientation between the antenna and the laminate layers), and the stacking sequence on antenna's resonant frequency and radiation pattern. The antenna size when embedded in composite laminated substrates is larger than that when attached on isotropic substrates, or conversely, the resonant frequency will deviate lower if assuming the substrate as isotropic. The far-field pattern in composite laminated substrates is more 'directional' than that in isotropic substrates. The antenna gain in the substrates of symmetric stacking with ±45°fiber direction is 20 dB better than that in isotropic substrates in some elevations.

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Radiation and resonant frequency of a resistive patch and uniaxial anisotropic substrate with entire domain and roof top functions

Cited by 6 publications

References 15 publications

The RCS of a Resistive Rectangular Patch Antenna in a Substrate-Superstrate Geometry

The RCS of a Resistive Rectangular Patch Antenna in a Substrate-Superstrate Geometry

Neurospectral computation for the resonant characteristics of microstrip patch antenna printed on uniaxially anisotropic substrates

On the performance of microstrip antenna embedded in composite laminated substrates

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