An improved thin-wire model for FDTD

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 bas...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2002-05, Vol.50 (5), p.1245-1255
Main Authors: Makinen, R.M., Juntunen, J.S., Kivikoski, M.A.
Format: Article
Language:English
Subjects:
Antenna accessories
Antenna feeds
Antennas
Caps (structural)
Charge
Dipole antennas
Finite difference method
Finite difference methods
Mathematical analysis
Mathematical models
Microwaves
Resonance
Resonant frequency
Solid modeling
Time domain analysis
Waveguide components
Wire
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Summary: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.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.999136