Title :
Finite element computation of antenna impedance including feed modeling
Author_Institution :
Ansys Inc., Houston, PA, USA
fDate :
3/1/1997 12:00:00 AM
Abstract :
In this paper, we discuss the frequency-domain FEM computation of antenna input impedance using curved, mixed-shaped “edge” elements. The antenna feed is treated as a waveguide and is included as part of the model. The feeding waveguide is truncated with a first-order absorbing boundary condition and the solution domain with a second-order condition. A monopole antenna on top of a conducting box is analyzed and good impedance results are obtained
Keywords :
antenna feeds; antenna radiation patterns; electric impedance; finite element analysis; frequency-domain analysis; monopole antennas; waveguide theory; antenna feed; antenna impedance; conducting box; curved mixed-shaped edge elements; feed modeling; feeding waveguide; finite element computation; first-order absorbing boundary condition; frequency-domain FEM computation; input impedance; monopole antenna; second-order condition; solution domain; Antenna feeds; Boundary conditions; Coaxial components; Conductivity; Electromagnetic scattering; Finite element methods; Integral equations; Light scattering; Surface impedance; Surface waves;
Journal_Title :
Magnetics, IEEE Transactions on
