An efficient FDTD model for resistively loaded cylindrical antennas with coaxial lines

Seung Yeup Hyun; Se Yun Kim; Young Sik Kim

doi:10.1109/TAP.2008.2011198

An efficient FDTD model for resistively loaded cylindrical antennas with coaxial lines

Seung Yeup Hyun, Se Yun Kim, Young Sik Kim

* Honorary professors

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

A full coarse-grid based finite-difference time-domain (FDTD) model is proposed for an efficient analysis of resistively loaded cylindrical antennas driven by coaxial feed lines. In the case of the electrically thin resistive antenna, the thin-wire approximation is applied to the near fields around the antenna. The resistive antenna is equivalently represented by a series connection of piecewisely lumped resistors along the antenna axis. And the coaxial line is replaced by an equivalent source over the feed aperture of the line. Then the corresponding FDTD update equations make it possible to implement the full coarse-grid model without additional grid refinements for the antenna and the feed line. The transient reflected feed voltage and the input impedance of resistive antennas are calculated numerically and compared with those of a full fine-grid.

Original language	English
Pages (from-to)	484-490
Number of pages	7
Journal	IEEE Transactions on Antennas and Propagation
Volume	57
Issue number	2
DOIs	https://doi.org/10.1109/TAP.2008.2011198
Publication status	Published - 2009

Keywords

Coaxial transmission lines
Cylindrical antennas
Finite-difference time-domain (FDTD) methods
Loaded antennas

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TAP.2008.2011198

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title = "An efficient FDTD model for resistively loaded cylindrical antennas with coaxial lines",

abstract = "A full coarse-grid based finite-difference time-domain (FDTD) model is proposed for an efficient analysis of resistively loaded cylindrical antennas driven by coaxial feed lines. In the case of the electrically thin resistive antenna, the thin-wire approximation is applied to the near fields around the antenna. The resistive antenna is equivalently represented by a series connection of piecewisely lumped resistors along the antenna axis. And the coaxial line is replaced by an equivalent source over the feed aperture of the line. Then the corresponding FDTD update equations make it possible to implement the full coarse-grid model without additional grid refinements for the antenna and the feed line. The transient reflected feed voltage and the input impedance of resistive antennas are calculated numerically and compared with those of a full fine-grid.",

keywords = "Coaxial transmission lines, Cylindrical antennas, Finite-difference time-domain (FDTD) methods, Loaded antennas",

author = "Hyun, {Seung Yeup} and Kim, {Se Yun} and Kim, {Young Sik}",

note = "Funding Information: Manuscript received January 06, 2008; revised June 13, 2008. Current version published March 20, 2009. This work was supported in part by the Korean Department of Commerce, Industry and Energy under Grant 10023090 and in part by the Korea Institute of Science and Technology under Contract 2E20730.",

year = "2009",

doi = "10.1109/TAP.2008.2011198",

language = "English",

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pages = "484--490",

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AU - Hyun, Seung Yeup

AU - Kim, Se Yun

AU - Kim, Young Sik

N1 - Funding Information: Manuscript received January 06, 2008; revised June 13, 2008. Current version published March 20, 2009. This work was supported in part by the Korean Department of Commerce, Industry and Energy under Grant 10023090 and in part by the Korea Institute of Science and Technology under Contract 2E20730.

PY - 2009

Y1 - 2009

N2 - A full coarse-grid based finite-difference time-domain (FDTD) model is proposed for an efficient analysis of resistively loaded cylindrical antennas driven by coaxial feed lines. In the case of the electrically thin resistive antenna, the thin-wire approximation is applied to the near fields around the antenna. The resistive antenna is equivalently represented by a series connection of piecewisely lumped resistors along the antenna axis. And the coaxial line is replaced by an equivalent source over the feed aperture of the line. Then the corresponding FDTD update equations make it possible to implement the full coarse-grid model without additional grid refinements for the antenna and the feed line. The transient reflected feed voltage and the input impedance of resistive antennas are calculated numerically and compared with those of a full fine-grid.

AB - A full coarse-grid based finite-difference time-domain (FDTD) model is proposed for an efficient analysis of resistively loaded cylindrical antennas driven by coaxial feed lines. In the case of the electrically thin resistive antenna, the thin-wire approximation is applied to the near fields around the antenna. The resistive antenna is equivalently represented by a series connection of piecewisely lumped resistors along the antenna axis. And the coaxial line is replaced by an equivalent source over the feed aperture of the line. Then the corresponding FDTD update equations make it possible to implement the full coarse-grid model without additional grid refinements for the antenna and the feed line. The transient reflected feed voltage and the input impedance of resistive antennas are calculated numerically and compared with those of a full fine-grid.

KW - Coaxial transmission lines

KW - Cylindrical antennas

KW - Finite-difference time-domain (FDTD) methods

KW - Loaded antennas

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JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

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An efficient FDTD model for resistively loaded cylindrical antennas with coaxial lines

Abstract

Keywords

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