Title :
An improved thin-wire model for FDTD
Author :
Mäkinen, Riku M. ; Juntunen, Jaakko S. ; Kivikoski, Markku A.
Author_Institution :
Inst. of Electron., Tampere Univ. of Technol., Finland
fDate :
5/1/2002 12:00:00 AM
Abstract :
An improved thin-wire model for the finite-difference time-domain method is proposed. The new model can be used to accurately model straight wire sections connected to other metal structures. In addition, the model includes the effect of charge accumulation at wire end caps. The end-cap model is based on conservation of charge and Coulomb´s law. Using the end-cap model, unconnected wires such as wire antennas are also accurately modeled. The results indicate a significant improvement in predicting the resonance frequency of a dipole antenna
Keywords :
antenna theory; dipole antennas; finite difference time-domain analysis; wire antennas; wires (electric); Coulomb law; charge conservation; dipole antenna; end-cap model; finite-difference time-domain method; resonance frequency; sub-cell model; thin-wire model; wire antenna; Antenna accessories; Antenna feeds; Dipole antennas; Finite difference methods; Resonance; Resonant frequency; Solid modeling; Time domain analysis; Waveguide components; Wire;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
