# SPECTRAL DOMAIN INTEGRAL EQUATION APPROACH OF AN EQUILATERAL TRIANGULAR MICROSTRIP ANTENNA USING THE MOMENT METHOD

• Aziz NACHIT

jmoe

## Abstract

An accurate integral equation approach of an equilateral triangular microstrip antenna using the moment method (MoM) in the spectral domain is presented. The excitation of the antenna is achieved by means of a linearly Epolarised plane wave with normal incidence. The exact Green's function of the grounded dielectric slab is used to derive an electric field integral equation (EFIE) for the unknown induced current distribution upon the antenna. Thus, surface waves as well as space-wave radiation are included in the formulation. The current distribution is expanded in terms of a number of overcoming triangles according to the excitation direction and a number of flat pulses according to the orthogonal direction in order to model accurately the antenna's edges current singularities and to improve the convergence. The unknown current distribution expansion coefficients are determined by numerically solving the matrix equation, of finite order, obtained from the application of the moment method in the spectral domain to the electric field integral equation. The current distribution behaviour is then used to compute some of the principals radiation, characteristics of the antenna. Numerical results concerning the resonant frequency, the bandwidth and the far field radiation patterns in the E and H planes are presented and discrepancies with experimental data (resonant frequency) reported in the literature and numerical results available from the coaxial feed cavity model (dominant mode) are noted.

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2000-05-03

## How to Cite

Aziz NACHIT, & Jaouad FOSHI. (2000). SPECTRAL DOMAIN INTEGRAL EQUATION APPROACH OF AN EQUILATERAL TRIANGULAR MICROSTRIP ANTENNA USING THE MOMENT METHOD. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 2(1), 1-13. Retrieved from http://www.jmoe.org/index.php/jmoe/article/view/46

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