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

Volume

51

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

1615

Lastpage

1622

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2003.813613

Filename

1210805