Analysis of HighTcSuperconducting Rectangular Microstrip Patches over Ground Planes with Rectangular Apertures in Substrates Containing Anisotropic Materials

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

doi:10.1155/2013/169893

Abderraouf Messai, Siham Benkouda + Show 3 more

Open Access

https://doi.org/10.1155/2013/169893

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Abstract

A rigorous full-wave analysis of highTcsuperconducting rectangular microstrip patch over ground plane with rectangular aperture in the case where the patch is printed on a uniaxially anisotropic substrate material is presented. The dyadic Green’s functions of the considered structure are efficiently determined in the vector Fourier transform domain. The effect of the superconductivity of the patch is taken into account using the concept of the complex resistive boundary condition. The accuracy of the analysis is tested by comparing the computed results with measurements and previously published data for several anisotropic substrate materials. Numerical results showing variation of the resonant frequency and the quality factor of the superconducting antenna with regard to operating temperature are given. Finally, the effects of uniaxial anisotropy in the substrate on the resonant frequencies of different TM modes of the superconducting microstrip antenna with rectangular aperture in the ground plane are presented.

Highlights

Microstrip patch resonators offer many attractive features such as low profile, light weight, low cost, and the ease with which they can be integrated with printed feeding networks and active circuits
Since groundplane apertures can play a role in the design of microstrip patch antennas, the algorithms developed for the analysis of these antennas should be able to account for the effect of possible apertures existing in the ground planes of the resonators
As far as the authors know, this subject has not been reported in the open literature; the only published results on the fullwave analysis of superconducting microstrip antennas with apertures in the ground planes refer to isotropic substrates [15]

Summary

Introduction

Microstrip patch resonators offer many attractive features such as low profile, light weight, low cost, and the ease with which they can be integrated with printed feeding networks and active circuits They can be used either as antennas or as components of oscillators and filters in microwave-integrated circuits. Setting aside the topic of superconducting materials, in the last few years, there has been a growing interest in studying how the performance of microstrip antennas is International Journal of Antennas and Propagation yxbadz=0 e Uniaxial substrate ε0, εx, ε0, εz, μ0 y ba x aa Figure 1: Geometrical structure of a high Tc superconducting rectangular microstrip patch over a ground plane with a rectangular aperture in the case where the superconducting patch is printed on an anisotropic dielectric substrate. As far as the authors know, this subject has not been reported in the open literature; the only published results on the fullwave analysis of superconducting microstrip antennas with apertures in the ground planes refer to isotropic substrates [15].

Theory

Numerical Results and Discussion

Conclusion