Theoretical Study of the Input Impedance and Electromagnetic Field Distribution of a Dipole Antenna Printed on an Electrical/Magnetic Uniaxial Anisotropic Substrate

Abstract

The present work considers the investigation of the effects of both electrical and magnetic uniaxial anisotropies on the input impedance, resonant length, and fields distribution of a dipole printed on an anisotropic grounded substrate. In this study, the associated integral equation, based on the derivation of the Green’s functions in the spectral domain, is numerically solved employing the method of moments. In order to validate the computing method and the evaluated calculation code, numerical results are compared with available data in the literature treating particular cases of electrical uniaxial anisotropy; reasonable agreements are reported. Novel results of the magnetic uniaxial anisotropy effects on the input impedance and the evaluated electromagnetic field are presented and discussed. This work will serve as a stepping stone for further works for a better understanding of the electromagnetic field behavior in complex anisotropic and bi-anisotropic media.

Analysis of gyrobianisotropic media effect on the input impedance, field distribution and mutual coupling of a printed dipole antenna

“…5 and 6 . The representation shows a good agreement compared to available data reported in literature 22 – 25 .…”

“…Particularly, the effect of the complex elements on the input impedance, resonant length and mutual coupling of two printed dipoles and hence, antenna performance according to the collinear, echelon and broadside configurations. The study extends our previous our works 10 , 22 , 23 , where only anisotropic and bi-isotropic medium cases were treated. It is based on a spectral theoretical formulation and a numerical solution technique using the moments method in the spectral domain; a method that is well known in the analysis of microwave planar structures 7 , 27 .…”

“…It is shown that surface waves increase the mutual coupling in a fixed linear arrangement of the printed dipoles and contribute to the cross-coupling. This also shows that the complex media present a great potential in the design of innovative microwave components 22 , 23 .…”

“…Recently, as material sciences have significantly advanced, the artificial mediums, such as chiral and general bianisotropic materials, have gained increased interest from researchers and industrials for their unusual and exciting properties 7 – 21 . In 22 , a theoretical study for investigating the electromagnetic field distributions and input impedance of a dipole antenna printed on a uniaxial anisotropic medium is presented. In 23 , the mutual coupling of two dipole antennas, printed on an anisotropic substrate, is studied for three different configurations: broadband, linear gradient and gradient after the evaluation of the input impedance.…”

Electronic packaging cabinets simplified modeling, simulation, and experimental validation for systems engineering

“…Some miniaturization methods useful in electronic systems have been reported recently. [1][2][3][4][5][6][7][8][9][10][11][12][13] In that context, system mathematical modeling and subsequent thermal management optimization are highly desirable to deal with system energy efficiency demand, costs reduction, and environmental impact minimization. In that sense, the requirement for system response direct assessment or computer simulation of a multitude of viable configurations for different operating parameters sets needs to be tackled by fast and sufficiently accurate models.…”