Analysis of the Combinatory Effect of Uniaxial Electrical and Magnetic Anisotropy on the Input Impedance and Mutual Coupling of a Printed Dipole Antenna

Mohamed Lamine Bouknia,Raed A Abd-Alhameed,Ernesto Limiti,Issa Elfergani,Jonathan Rodriguez,Francisco Falcone,Mohammad Alibakhshikenari,Chemseddine Zebiri,Djamel Sayad

doi:10.1109/access.2021.3085949

Abstract

The main objective of this work is to investigate the combinatory effects of both uniaxial magnetic and electrical anisotropies on the input impedance, resonant length and the mutual coupling between two dipoles printed on an anisotropic grounded substrate. Three different configurations: broadside, collinear and echelon are considered for the coupling investigation. The study is based on the numerical solution of the integral equation using the method of moments through the mathematical derivation of the appropriate Green’s functions in the spectral domain. In order to validate the computing method and evaluated MatlabⓇ calculation code, numerical results are compared with available literature treating particular cases of uniaxial electrical anisotropy; good agreements are observed. New results of dipole structures printed on uniaxial magnetic anisotropic substrates are presented and discussed, with the investigation of the combined electrical and magnetic anisotropies effect on the input impedance and mutual coupling for different geometrical configurations. The combined uniaxial (electric and magnetic) anisotropies provide additional degrees of freedom for the input impedance control and coupling reduction.

Highlights

With the advancement of telecommunications in recent years, it has become increasingly obvious to use planar antennasThe associate editor coordinating the review of this manuscript and approving it for publication was Conrad Rizal .and antenna arrays in many areas
NUMERICAL RESULTS In this work, we are first interested in the input impedance, the resonant length of the dipole and second in the mutual coupling between two printed dipoles arranged in three configurations
VALIDATION In this subsection, we investigate the effect of the substrate anisotropy on the input impedance of the dipole, in addition to the consideration of the mutual coupling for three cases of geometrical configurations

Summary

Introduction

With the advancement of telecommunications in recent years, it has become increasingly obvious to use planar antennasThe associate editor coordinating the review of this manuscript and approving it for publication was Conrad Rizal .and antenna arrays in many areas. Bouknia et al.: Analysis of the Combinatory Effect of Uniaxial Electrical and Magnetic Anisotropy communication applications They continue to play a crucial role in communication technologies for various wireless applications, all with outstanding operating performances. Small, inexpensive, easy to mount and to integrate with microwave monolithic integrated circuits (MMICs), the planar dipole antennas have been designed to be applied in many antenna and antenna arrays technologies. They are widely used in telecommunication applications, among others, we cite mobile phone systems, RFID, ISM systems and wireless sensors [1]–[4]. As material sciences have greatly advanced, the complex media have significantly arose as promising materials in the field of microwaves and optics [5]–[7]

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