Title :
Finite-element time-domain analysis of axisymmetrical radiators
Author :
Ali, H.O. ; Costache, G.
Author_Institution :
Dept. of Electr. Eng., Ottawa Univ., Ont., Canada
fDate :
2/1/1994 12:00:00 AM
Abstract :
A method of analysis which permits the computation of electromagnetic fields directly in the time domain using the finite element method (FEM) is presented. The method considers coaxially-driven axisymmetrical structures. A new way of implementing absorbing boundary conditions for the coaxial feed is discussed. The method has been successfully used to model coaxially-driven axisymmetrical monopole antennas for a Gaussian pulse excitation. Generally, the results obtained show good agreement with previously published numerical and experimental data
Keywords :
antenna feeders; antenna radiation patterns; antenna theory; finite element analysis; monopole antennas; time-domain analysis; FEM; Gaussian pulse excitation; absorbing boundary conditions; axisymmetrical radiators; coaxial feed; coaxially-driven axisymmetrical monopole antennas; coaxially-driven axisymmetrical structures; electromagnetic fields; finite-element time-domain analysis; Coaxial components; Equations; Feeds; Finite difference methods; Finite element methods; Optical propagation; Optical transmitters; Radar antennas; Radio transmitters; Time domain analysis;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
