Uniaxially anisotropic substrate effects on resonance of rectangular microstrip patch antenna

Bouttout, Farid; Benabdelaziz, F.; Benghalia, Abdelmadjid; Khedrouche, Djamel; Fortaki, Tarek

doi:10.1049/el:19990026

Cited by 45 publications

(48 citation statements)

References 5 publications

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“…layers of the substrate are taken to be infinite in extent and these layers are also assumed to be made of the uniaxial anisotropic dielectrics, characterized by a permittivity tensor given by [4,5]:…”

Section: Theorymentioning

confidence: 99%

“…Superconducting or perfect microstrip antennas are becoming popular and getting increased attention in both theoretical research and engineering applications due to their excellent advantages [2][3][4][5][6]. They are characterized by their low profile, small size, light weight, low cost and ease of fabrication, which makes them very suitable for microwave and millimeter-wave device applications [7].…”

Section: Introductionmentioning

confidence: 99%

“…Three very popular full wave methods that can be used to characterise microstrip patch antennas are: the finite element method, the finite difference time domain method, and the moment method [3]. The last one is arguably the most popular [4][5][6] and will be used in our work. For that, a rigorous full-wave analysis with basis modes involving Chebyshev polynomials is developed and applied.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving the Performances of a High Tc Superconducting Circular Microstrip Antenna With Multilayered Configuration and Aniso Tropic Dielectrics

Benmeddour

Dumond

Benabdelaziz³

et al. 2011

PIER C

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. Improving the performances of a high Tc superconducting circular microstrip antenna with multilayered configuration and anisotropic dielectrics. Progress In Electromagnetics Research, EMW Publishing, 2010, vol. 18, pp 169-183. Progress In Electromagnetics Research C, Vol. 18, 169-183, 2011 IMPROVING Abstract-The moment method technique has been improved to investigate the scattering properties of high T c superconducting circular antennas with anisotropic substrate in multi-layered configuration. In this method, the electric field integral equation for a current element on a grounded dielectric slab of infinite extent was developed by basis functions involving Chebyshev polynomials. An improved analytical model is presented taking into account anisotropic substrate, superconducting material for the circular patch and multilayered structure. To validate the theoretical results, an experimental study has been performed for a perfectly conducting circular patch on a single layer, with and without air gap. Good agreements were obtained between our theory and measurements. Effects of temperature and thickness of a superconducting film are also reported and discussed. The performances of high T c superconducting circular antennas were improved by the use of uniaxial anisotropy substrate and multilayer configuration.

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Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving the Performances of a High Tc Superconducting Circular Microstrip Antenna With Multilayered Configuration and Aniso Tropic Dielectrics

Benmeddour

Dumond

Benabdelaziz³

et al. 2011

PIER C

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“…In addition, anisotropic substrates have become popular in the design of microwave integrated circuit components and microstrip antennas [1][2][3][4][5][6][7][8]. Uniaxial substrates have drawn more attention due to their availability in materials such as sapphire, boron nitride and E-10 ceramic-impregnated Teflon.…”

Section: Introductionmentioning

confidence: 99%

“…Uniaxial substrates have drawn more attention due to their availability in materials such as sapphire, boron nitride and E-10 ceramic-impregnated Teflon. Previous studies of anisotropic materials used in microwave devices indicate that the effects of anisotropy on the performance of such structures particularly in high frequencies cannot be ignored [1,5,6]. Furthermore, it has been shown that the performance of directional couplers can be improved by using the anisotropic substrates to equalize the even and odd mode phase velocities [2].…”

Section: Introductionmentioning

confidence: 99%

Specteral Domain Analysis of Resonant Characteristics and Radiation Patterns of a Circular Disk and Annular Ring Microstrip Antenna on Uniaxial Substrate

Motevasselian¹

2011

PIER M

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Abstract-A full-wave analysis for determining the resonant frequency, quality factor and far-zone radiation patterns of a circular disk and annular ring microstrip patches, printed on a uniaxial anisotropic substrate is presented. Green's functions of the structure are determined in Hankel transform domain (HTD) using Hertz potential vectors. Galerkin's method, together with parsval's relation in Hankel transform domain is then applied to compute the resonant frequency and quality factor. The far-zone radiation patterns are expressed in terms of Hankel transforms of the tangential fields on the substrate. Wave equation is solved in cylindrical coordinates for the structure to estimate the basis function. The numerical results show that there are substantial deviations in calculated resonant frequency and quality factor when substrate dielectric anisotropy is considered. Furthermore, significant variations are seen in the radiation patterns of the structures due to substrate anisotropy. The variations of resonant frequency, quality factor and radiation patterns of the structure, with respect to anisotropy ratio of the substrate, for several values of substrate thickness and patch radius are presented.

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Numerical analysis of rectangular microstrip patch over ground plane with rectangular aperture

Fortaki

Khedrouche

Bouttout

et al. 2004

Commun. Numer. Meth. Engng.

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SUMMARYIn this paper, a rigorous full-wave analysis of rectangular microstrip patches over ground planes with rectangular apertures in substrates containing isotropic and anisotropic materials is presented. The dyadic Green's functions of the problem are e ciently determined in the vector Fourier transform domain. The integral equations for the unknown patch current and aperture ÿeld are solved numerically by applying the Galerkin method of moments. The TM set of modes issued from the magnetic wall cavity model are used to expand the unknown current on the patch. Also, the same basis functions are used for approximating the aperture ÿeld in accordance with the concept of complementary electromagnetic structures. The validity of the solution is tested by comparison of the computed results with experimental data. Numerical results show that changes in aperture length can drastically shift the resonant frequency. The aperture width, on the other hand, can be used for a ÿne adjustment of the operating frequency. Other results also indicate that dielectric anisotropy e ect is especially signiÿcant when the size of the aperture is similar to that of the patch.

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Uniaxially anisotropic substrate effects on resonance of rectangular microstrip patch antenna

Cited by 45 publications

References 5 publications

Improving the Performances of a High Tc Superconducting Circular Microstrip Antenna With Multilayered Configuration and Aniso Tropic Dielectrics

Improving the Performances of a High Tc Superconducting Circular Microstrip Antenna With Multilayered Configuration and Aniso Tropic Dielectrics

Specteral Domain Analysis of Resonant Characteristics and Radiation Patterns of a Circular Disk and Annular Ring Microstrip Antenna on Uniaxial Substrate

Numerical analysis of rectangular microstrip patch over ground plane with rectangular aperture

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