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http://dx.doi.org/10.5515/KJKIEES.2014.25.1.114

A Comparative Study on Interrelation between FDTD Source Models for Coaxial-Probe Feeding Structures  

Hyun, Seung-Yeup (Department of Telecommunication Engineering, Jeju National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.25, no.1, 2014 , pp. 114-122 More about this Journal
Abstract
For an efficient finite-difference time-domain(FDTD) analysis of coaxial-probe feeding structures in radio frequency(RF) and microwave bands, an interrelation between equivalent source modeling techniques is investigated. In existing literature, equivalent source models with delta-gap or magnetic-frill concepts have been developed by many researchers. It is well known that FDTD implementation and computational accuracy of these source models are slightly different. In this paper, the interrelation between FDTD equivalent source models for coaxial feeding structures under the quasi-static approximation(QSA) is presented. As a function of FDTD equivalent source models, time-domain and frequency-domain responses of a coaxial-probe fed conical monopole antenna are calculated numerically. And comparison results of computational accuracy and efficiency are provided.
Keywords
Coaxial-Probe Feeding; FDTD(Finite-Difference Time-Domain); Equivalent Source Model; Delta-Gap Voltage Source; Magnetic-Frill Current Source;
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