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

• Published in: Physica. C, Superconductivity Vol. 502; pp. 70 - 75
• Main Authors: Benkouda, Siham, Messai, Abderraouf, Amir, Mounir, Bedra, Sami, Fortaki, Tarek
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-07-2014; Elsevier
• Subjects: Anisotropic substrate; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Permittivity and permeability tensors; Physics; Properties of type I and type II superconductors; Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.); Superconducting microstrip patch; Superconductivity; Superconducting microstrip patch; Anisotropic substrate; Permittivity and permeability tensors; Boundary conditions; Microstrip; Anisotropy; Integral equations; Quality factor; Magnetic permeability; Magnetic anisotropy; Resonance frequency; Bandwidth; High-Tc superconductors; Green's function methods; Permittivity
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2014.04.015

•We model a microstrip antenna with anisotropic substrate and superconductor patch.•The extended full-wave analysis is used to solve for the antenna characteristics.•The accuracy of the method is checked by comparing our results with published data.•Uniaxial anisotropy affects the resonant characteristics of the antenna.•Patch on uniaxial substrate is more advantageous than the one on isotropic medium.
Resonant characteristics of a high Tc superconducting rectangular microstrip patch printed on uniaxially anisotropic substrate are investigated using a full-wave spectral analysis in conjunction with the complex resistive boundary condition. The uniaxial medium shows anisotropy of an electric type as well as anisotropy of a magnetic type. Both permittivity and permeability tensors of the substrate are included in the formulation of the dyadic Green’s function of the problem. The accuracy of the analysis is tested by comparing the computed results with previously published data for several anisotropic substrate materials. Numerical data of the resonant frequency and bandwidth as a function of electric anisotropy ratio are presented. Variations of the resonant frequency and bandwidth with the magnetic anisotropy ratio are also given. Finally, results showing the influence of the temperature on the resonant frequency and quality factor of the high Tc superconducting rectangular microstrip patch on a uniaxial substrate are also given.