Finite-difference time-domain model for the feeding gap of coaxial probe driven antennas

Title
Finite-difference time-domain model for the feeding gap of coaxial probe driven antennas
Authors
현승엽김세윤김영식
Keywords
FDTD; antenna; feed
Issue Date
2009-04
Publisher
IET microwaves, antennas & propagation.
Citation
VOL 3, NO 3, 501-506
Abstract
In the finite-difference time-domain (FDTD) method, a simple and realistic feed model for coaxial probe driven antennas is proposed here. The feed zone of the antenna may be considered as an equivalent source in view of the antenna theory and a load port in view of the transmission line theory. The proposed feed model is constructed by combining the infinitesimal-gap source condition of the antenna and the equivalent load condition of the feed line. It leads to perform no additional FDTD cell modelling of the line. The transient reflected voltage and the input impedance of cylindrical monopole antennas fed by coaxial lines are calculated numerically and then compared with the accurate measurement and a full fine-grid. The FDTD results of the proposed model have a good agreement with the measured data and the fine-grid results.
URI
http://pubs.kist.re.kr/handle/201004/35068
ISSN
1751-8725
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KIST Publication > Article
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