Characteristics of a high Tc superconducting rectangular microstrip patch on uniaxially anisotropic substrate

Benkouda, Siham; Messai, Abderraouf; Amir, Mounir; Bedra, Sami; Fortaki, Tarek

doi:10.1016/j.physc.2014.04.015

Cited by 16 publications

(19 citation statements)

References 20 publications

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“…e iks·rs is the kernel of the vector Fourier transform [18], and the continuity equations for the tangential field components are (4) is the vector Fourier transform of the current on the superconducting patch J(r s ) and accounts for the discontinuity of the tangential magnetic field at the interface z = d 1 , and δ j1 is the Kronecker symbol [18]. The transverse electric field must necessarily be nil on a perfect conductor so that for the ground plane we have [13] e(k s , 0…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…When the thickness of the superconducting patch is less than three times of the zero-temperature penetration depth (λ 0 ), Z s can be expressed as follows [16][17][18][19]:…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…It is determined by using London's equation and the Gorter-Casimir two-fluid model as [16][17][18][19] …”

Section: Mathematical Formulationmentioning

confidence: 99%

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Effects of Superstrate Layer on the Resonant Characteristics of Superconducting Rectangular Microstrip Patch Antenna

Bedra¹,

Fortaki²

2016

PIER C

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Abstract-The resonant characteristics of superconducting rectangular microstrip patch antenna with a superstrate layer are investigated using a full-wave spectral analysis in conjunction with the complex resistive boundary condition. The complex surface impedance of superconducting patch is determined using London's equation and the two-fluid model of Gorter and Casimir. Numerical results using the full-wave analysis presented here are in excellent agreement with theoretical and experimental results available in the open literature. Numerical results show that the effect of the superstrate layer on the resonant frequency and half-power bandwidth of the superconducting rectangular patch is stronger than that of the structure without superstrate layer as both the thickness and permittivity of the superstrate increase. Finally, numerical results concerning the effects of the parameters of superstrate-substrate and superconducting patch on the antenna performance are also presented and discussed.

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Section: Mathematical Formulationmentioning

confidence: 99%

“…When the thickness of the superconducting patch is less than three times of the zero-temperature penetration depth (λ 0 ), Z s can be expressed as follows [16][17][18][19]:…”

Section: Mathematical Formulationmentioning

confidence: 99%

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Effects of Superstrate Layer on the Resonant Characteristics of Superconducting Rectangular Microstrip Patch Antenna

Bedra¹,

Fortaki²

2016

PIER C

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“…Therefore the researchers for high Tc superconducting microwave devices mainly have performed at the boiling point of liquid nitrogen, 77 K. However it could be needed to note that even below Tc the characteristics of high Tc superconducting microwave devices are varied with the temperature. Some dielectric substances exhibit anisotropy due to their natural crystal structures or as the result of their production processes [5]. Isotropic substances may also exhibit anisotropy at high frequencies.…”

Section: Introductionmentioning

confidence: 99%

“…In the design of microwave integrated circuit components and microstrip patch antennas, anisotropic substances have been increasingly popular. Especially the effects of uniaxial type anisotropy have also been considered in some of the later studies [5][6][7][8][9][10] due to the availability of this kind of substances such as Sapphire, Magnesium fluoride and Epsilam-10. Formulations of those studies are lengthy and complicated even in single substrate case.…”

Section: Introductionmentioning

confidence: 99%

Efficient CAD Model to Analysis of High Tc Superconducting Circular Microstrip Antenna on Anisotropic Substrates

Bedra

Benkouda

et al. 2017

AEM

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In this paper, an electromagnetic approach based on cavity model in conjunction with electromagnetic knowledge was developed. The cavity model combined with London's equations and the Gorter-Casimir two-fluid model has been improved to investigate the resonant characteristics of high Tc superconducting circular microstrip patch in the case where the patch is printed on uniaxially anisotropic substrate materials. Merits of our extended model include low computational cost and mathematical simplify. The numerical simulation of this modeling shows excellent agreement with experimental results available in the literature. Finally, numerical results for the dielectric anisotropic substrates effects on the operating frequencies for the case of the superconducting circular patch are also presented.

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Spectral Domain Analysis of Resonant Characteristics of High Tc Superconducting Rectangular Microstrip Patch Printed on Isotropic or Uniaxial Anisotropic Substrates

Bedra

Fortaki

Messai

et al. 2015

Wireless Pers Commun

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In this paper, radiation characteristics of the perfectly superconducting, or an imperfectly conducting rectangular microstrip, which is printed on isotropic or uniaxial anisotropic substrate are investigated using a Fourier transforms domain in conjunction with the stationary phase method. The effects of uniaxial anisotropy on the resonant frequency, half-power bandwidth, and radiation patterns are investigated as the function of anisotropy ratio values of substrate materials. It is found that the resonant frequency and the half-power bandwidth are affected significantly by the superconductivity property of the patch. Further results show that a thin superconductor patch has a significant effect on the radiation pattern. Results are compared with previously published data and are found to be in good agreement.

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Characteristics of a high Tc superconducting rectangular microstrip patch on uniaxially anisotropic substrate

Cited by 16 publications

References 20 publications

Effects of Superstrate Layer on the Resonant Characteristics of Superconducting Rectangular Microstrip Patch Antenna

Effects of Superstrate Layer on the Resonant Characteristics of Superconducting Rectangular Microstrip Patch Antenna

Efficient CAD Model to Analysis of High Tc Superconducting Circular Microstrip Antenna on Anisotropic Substrates

Spectral Domain Analysis of Resonant Characteristics of High Tc Superconducting Rectangular Microstrip Patch Printed on Isotropic or Uniaxial Anisotropic Substrates

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