CALCULATION VOLTAGE AND CURRENT MATRRCIES A CIRULAR PATCH M ICROSTRIPANTENNA LOADED BY DUBALE ANNULAR RING

Abstract

A theoretical study of antenna design and calculation of voltage and current matrices usingElectric Fields Integral Equation )EFIE( and Magnetic Field Integral Equation )MFIE( werepresented. These equations have been solved, using the method of moments MoM. It is a numericalmethod with high calculation capacity also can use Galerkin's approach, which considered weightingfunctions to convert the integral equations to the linear matrices according to the antenna symmetryabout z-axis.The unknown electric current density on the surface of the conductor ,and both unknowns electricand magnetic density current on the surface of the dielectric were calculated .The number of basisfunctions on different surfaces that provide a saturation case for currents and voltages value weredetermined on deferent surfaces and calculated the propose antenna parameters .