Finite Element Method for the Electrical Scalar Helmholtz Field Modeling, in Application to 2.4 GHz Waveguide Cylindrical Antenna

Essaid El Kennassi, Mohammed Amine DIRHAR, Khalid IDRISSI JANATI, Lahbib BOUSSHINE

Abstract


Electrical scalar Helmholtz equation is necessary to understand the field behavior. The cylindrical antennas presenting cavities like waveguides are a major problem related to field prediction. We used finite element method to solve the Helmholtz equation governing the system. We imposed two kind of boundary conditions, first, Dirichlet boundary condition, and second, absorbing boundary condition. An adaptive shape mesh generation is also used. Finally numerical results are given. The polar plot of our cylindrical antenna has directional pattern. This antenna is directive. 


Keywords


Antenna radiation pattern, Directive antenna, Finite element analysis, Minimization method

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References


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