Title :
A stabilized resistive voltage source for FDTD thin-wire models
Author :
Mäkinen, Riku M. ; Kivikoski, Markku A.
Author_Institution :
Inst. of Electron., Tampere Univ. of Technol., Finland
fDate :
7/1/2003 12:00:00 AM
Abstract :
The von Neumann analysis is applied to investigate the stability of a source connected on a wire described by a thin-wire model. Both a soft source and a resistive voltage source (RVS) are shown to limit the stable range of values for wire radius or time step. Using the von Neumann analysis, a stable RVS model for thin wires is developed. The proposed model is verified by comparison with a hard source, an original RVS and NEC-generated reference data. The stabilized RVS introduces no additional stability constraints on those of the wire model while maintaining fast decay of incident fields of the original RVS model.
Keywords :
dipole antennas; electric resistance; electromagnetic fields; finite difference time-domain analysis; stability; wire antennas; wires (electric); FDTD method; FDTD thin-wire models; NEC-generated reference data; dipole antenna; fast incident fields decay; finite-difference time-domain methods; magnetic field components; radial electric field components; soft source; stability constraints; stabilized RVS; stabilized resistive voltage source; static field distribution; time step; von Neumann analysis; wire antennas; wire radius; Antenna feeds; Dielectric resonator antennas; Dipole antennas; Equations; Finite difference methods; Impedance; Stability analysis; Time domain analysis; Voltage; Wire;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2003.813613
