Improving the performances of triangular microstrip antenna with multilayered configuration

Abstract

Purpose – An improved analytical model is presented to investigate the scattering properties of high Tc superconducting triangular antennas in multilayered configuration. The spectral method is used to study the scattering properties of superconducting triangular antennas. Galerkin method is used in the resolution of the electric field integral equation. The boundary condition for the electric field was used to derive an integral equation for the electric current. To validate the theoretical results, a study has been performed for perfectly conducting triangular patch on a single layer, with air gap, and cover layer. The computed data are found to be in good agreement. The paper aims to discuss these issues. Design/methodology/approach – A spectral domain approach has been used for the numerical calculation of the characteristics of a high Tc superconducting microstrip antenna with an air gap and cover layer. Initially, the authors use an integral method of moment which enabled them to exploit the spectral tensor of green. The resolution of the integral equations of the electric field by the procedure of Galerkin makes it possible to lead to a system of equations homogenous. The authors have calculated the frequency of resonance and the radiation pattern of antenna. Findings – The properties of the HTSTMA structure were stable at temperatures slightly lower than the critical temperature. Also computations show that the air separation can be adjusted to have the maximum operating frequency of the superconducting microstrip antenna. On the other hand, the bandwidth increases monotonically with increasing the air gap width. Therefore, HTS materials do offer efficiency improvements for antenna systems that can accommodate the added constraints of the superconducting environment. The calculated results have been compared with measured one available in the literature and excellent agreement has been found. Originality/value – To the best of the authors' knowledge, this subject has not been reported in the open literature; the only published results on the analysis of perfectly conducting triangular microstrip antennas.